25540628 has 12 divisors (see below), whose sum is σ = 45454080. Its totient is φ = 12553752.

The previous prime is 25540607. The next prime is 25540651. The reversal of 25540628 is 82604552.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25540594 and 25540603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53876 + ... + 54347.

It is an arithmetic number, because the mean of its divisors is an integer number (3787840).

Almost surely, 2^25540628 is an apocalyptic number.

It is an amenable number.

25540628 is a deficient number, since it is larger than the sum of its proper divisors (19913452).

25540628 is a wasteful number, since it uses less digits than its factorization.

25540628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108286 (or 108284 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 25540628 is about 5053.7736395688. The cubic root of 25540628 is about 294.4945015274.

The spelling of 25540628 in words is "twenty-five million, five hundred forty thousand, six hundred twenty-eight".