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1252025 = 5261821
BaseRepresentation
bin100110001101010111001
32100121110022
410301222321
5310031100
642500225
713433135
oct4615271
92317408
101252025
11785735
12504675
1334ab58
142483c5
1519ae85
hex131ab9

1252025 has 12 divisors (see below), whose sum is σ = 1579884. Its totient is φ = 984000.

The previous prime is 1252021. The next prime is 1252037. The reversal of 1252025 is 5202521.

It can be written as a sum of positive squares in 6 ways, for example, as 355216 + 896809 = 596^2 + 947^2 .

It is not a de Polignac number, because 1252025 - 22 = 1252021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1251994 and 1252012.

It is not an unprimeable number, because it can be changed into a prime (1252021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1115 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (131657).

21252025 is an apocalyptic number.

It is an amenable number.

1252025 is a deficient number, since it is larger than the sum of its proper divisors (327859).

1252025 is an equidigital number, since it uses as much as digits as its factorization.

1252025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1252025 is about 1118.9392298065. The cubic root of 1252025 is about 107.7798728548.

Adding to 1252025 its reverse (5202521), we get a palindrome (6454546).

The spelling of 1252025 in words is "one million, two hundred fifty-two thousand, twenty-five".

Divisors: 1 5 25 61 305 821 1525 4105 20525 50081 250405 1252025