25206656611420 has 48 divisors (see below), whose sum is σ = 53425986768000. Its totient is φ = 9988968936960.

The previous prime is 25206656611403. The next prime is 25206656611511. The reversal of 25206656611420 is 2411665660252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17693856 + ... + 19065304.

It is an arithmetic number, because the mean of its divisors is an integer number (1113041391000).

Almost surely, 2^{25206656611420} is an apocalyptic number.

25206656611420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25206656611420 is an abundant number, since it is smaller than the sum of its proper divisors (28219330156580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25206656611420 is a wasteful number, since it uses less digits than its factorization.

25206656611420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379998 (or 1379996 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 25206656611420 in words is "twenty-five trillion, two hundred six billion, six hundred fifty-six million, six hundred eleven thousand, four hundred twenty".