25151321971055 has 16 divisors (see below), whose sum is σ = 34500639005184. Its totient is φ = 17242922057760.

The previous prime is 25151321971007. The next prime is 25151321971073. The reversal of 25151321971055 is 55017912315152.

It is not a de Polignac number, because 25151321971055 - 2²⁶ = 25151254862191 is a prime.

It is a Duffinian number.

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, 76891181 + ... + 77217590.

It is an arithmetic number, because the mean of its divisors is an integer number (2156289937824).

Almost surely, 2^{25151321971055} is an apocalyptic number.

25151321971055 is a deficient number, since it is larger than the sum of its proper divisors (9349317034129).

25151321971055 is a wasteful number, since it uses less digits than its factorization.

25151321971055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154113446.

The product of its (nonzero) digits is 472500, while the sum is 47.

The spelling of 25151321971055 in words is "twenty-five trillion, one hundred fifty-one billion, three hundred twenty-one million, nine hundred seventy-one thousand, fifty-five".