25801520161888 has 48 divisors (see below), whose sum is σ = 51075368935920. Its totient is φ = 12830174156800.

The previous prime is 25801520161871. The next prime is 25801520161909. The reversal of 25801520161888 is 88816102510852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931103 + ... + 7438561.

It is an arithmetic number, because the mean of its divisors is an integer number (1064070186165).

Almost surely, 2^{25801520161888} is an apocalyptic number.

It is an amenable number.

25801520161888 is a deficient number, since it is larger than the sum of its proper divisors (25273848774032).

25801520161888 is a wasteful number, since it uses less digits than its factorization.

25801520161888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508271 (or 5508263 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 55.

The spelling of 25801520161888 in words is "twenty-five trillion, eight hundred one billion, five hundred twenty million, one hundred sixty-one thousand, eight hundred eighty-eight".