25660252 has 12 divisors (see below), whose sum is σ = 45538416. Its totient is φ = 12649280.

The previous prime is 25660247. The next prime is 25660319. The reversal of 25660252 is 25206652.

It is a self number, because there is not a number n which added to its sum of digits gives 25660252.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 44893 + ... + 45460.

It is an arithmetic number, because the mean of its divisors is an integer number (3794868).

Almost surely, 2^25660252 is an apocalyptic number.

It is an amenable number.

25660252 is a deficient number, since it is larger than the sum of its proper divisors (19878164).

25660252 is a wasteful number, since it uses less digits than its factorization.

25660252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90428 (or 90426 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 25660252 is about 5065.5949305091. The cubic root of 25660252 is about 294.9535577564.

The spelling of 25660252 in words is "twenty-five million, six hundred sixty thousand, two hundred fifty-two".