25615252 has 12 divisors (see below), whose sum is σ = 48274996. Its totient is φ = 11822400.

The previous prime is 25615223. The next prime is 25615259. The reversal of 25615252 is 25251652.

It can be written as a sum of positive squares in 2 ways, for example, as 15968016 + 9647236 = 3996^2 + 3106^2 .

It is a super-2 number, since 2×25615252² = 1312282270047008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25615252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25615259) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 246249 + ... + 246352.

Almost surely, 2^25615252 is an apocalyptic number.

It is an amenable number.

25615252 is a deficient number, since it is larger than the sum of its proper divisors (22659744).

25615252 is a wasteful number, since it uses less digits than its factorization.

25615252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492618 (or 492616 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 25615252 is about 5061.1512524326. The cubic root of 25615252 is about 294.7810383218.

The spelling of 25615252 in words is "twenty-five million, six hundred fifteen thousand, two hundred fifty-two".