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970225 = 521972
BaseRepresentation
bin11101100110111110001
31211021220021
43230313301
5222021400
632443441
711150434
oct3546761
91737807
10970225
11602a43
123a9581
1327c7c9
141b381b
1514271a
hexecdf1

970225 has 9 divisors (see below), whose sum is σ = 1209217. Its totient is φ = 772240.

The previous prime is 970219. The next prime is 970231. The reversal of 970225 is 522079.

Multipling 970225 by its sum of digits (25), we get a square (24255625 = 49252).

970225 divided by its sum of digits (25) gives a square (38809 = 1972).

It can be divided in two parts, 9 and 70225, that multiplied together give a square (632025 = 7952).

970225 = 6962 + 6972.

The square root of 970225 is 985.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (970219) and next prime (970231).

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 746496 = 473^2 + 864^2 .

It is not a de Polignac number, because 970225 - 23 = 970217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 970225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4827 + ... + 5023.

2970225 is an apocalyptic number.

970225 is the 985-th square number.

970225 is the 697-th centered square number and also the 493-rd centered octagonal number.

It is an amenable number.

970225 is a deficient number, since it is larger than the sum of its proper divisors (238992).

970225 is an equidigital number, since it uses as much as digits as its factorization.

970225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The cubic root of 970225 is about 98.9974831860.

The spelling of 970225 in words is "nine hundred seventy thousand, two hundred twenty-five".

Divisors: 1 5 25 197 985 4925 38809 194045 970225