25251628 has 12 divisors (see below), whose sum is σ = 44390080. Its totient is φ = 12568752.

The previous prime is 25251623. The next prime is 25251661. The reversal of 25251628 is 82615252.

It is a hoax number, since the sum of its digits (31) 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 25251628.

It is not an unprimeable number, because it can be changed into a prime (25251623) 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 3 ways as a sum of consecutive naturals, for example, 13263 + ... + 15046.

Almost surely, 2^25251628 is an apocalyptic number.

It is an amenable number.

25251628 is a deficient number, since it is larger than the sum of its proper divisors (19138452).

25251628 is a wasteful number, since it uses less digits than its factorization.

25251628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28536 (or 28534 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 25251628 is about 5025.0998000040. The cubic root of 25251628 is about 293.3795203902.

The spelling of 25251628 in words is "twenty-five million, two hundred fifty-one thousand, six hundred twenty-eight".