25620165628 has 6 divisors (see below), whose sum is σ = 44835289856. Its totient is φ = 12810082812.

The previous prime is 25620165617. The next prime is 25620165647. The reversal of 25620165628 is 82656102652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202520700 + ... + 3202520707.

Almost surely, 2^25620165628 is an apocalyptic number.

It is an amenable number.

25620165628 is a deficient number, since it is larger than the sum of its proper divisors (19215124228).

25620165628 is a wasteful number, since it uses less digits than its factorization.

25620165628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405041411 (or 6405041409 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 25620165628 in words is "twenty-five billion, six hundred twenty million, one hundred sixty-five thousand, six hundred twenty-eight".