25155361264 has 40 divisors (see below), whose sum is σ = 53178190128. Its totient is φ = 11432340480.

The previous prime is 25155361219. The next prime is 25155361289. The reversal of 25155361264 is 46216355152.

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, 2006664 + ... + 2019160.

Almost surely, 2^25155361264 is an apocalyptic number.

It is an amenable number.

25155361264 is an abundant number, since it is smaller than the sum of its proper divisors (28022828864).

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

25155361264 is a wasteful number, since it uses less digits than its factorization.

25155361264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23953 (or 23947 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The spelling of 25155361264 in words is "twenty-five billion, one hundred fifty-five million, three hundred sixty-one thousand, two hundred sixty-four".