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891425 = 52181197
BaseRepresentation
bin11011001101000100001
31200021210202
43121220201
5212011200
631034545
710401623
oct3315041
91607722
10891425
11559817
1236ba55
13252992
14192c13
151291d5
hexd9a21

891425 has 12 divisors (see below), whose sum is σ = 1117116. Its totient is φ = 705600.

The previous prime is 891421. The next prime is 891427. The reversal of 891425 is 524198.

It can be written as a sum of positive squares in 6 ways, for example, as 22801 + 868624 = 151^2 + 932^2 .

It is not a de Polignac number, because 891425 - 22 = 891421 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891425.

It is not an unprimeable number, because it can be changed into a prime (891421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4427 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (93093).

2891425 is an apocalyptic number.

It is an amenable number.

891425 is a deficient number, since it is larger than the sum of its proper divisors (225691).

891425 is a wasteful number, since it uses less digits than its factorization.

891425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 383 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 891425 is about 944.1530596254. The cubic root of 891425 is about 96.2413271547.

The spelling of 891425 in words is "eight hundred ninety-one thousand, four hundred twenty-five".

Divisors: 1 5 25 181 197 905 985 4525 4925 35657 178285 891425