25215013395 has 64 divisors (see below), whose sum is σ = 52663564800. Its totient is φ = 11285032320.

The previous prime is 25215013387. The next prime is 25215013433. The reversal of 25215013395 is 59331051252.

25215013395 is a `hidden beast` number, since 252 + 1 + 5 + 0 + 13 + 395 = 666.

It is not a de Polignac number, because 25215013395 - 2³ = 25215013387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 633765 + ... + 672374.

It is an arithmetic number, because the mean of its divisors is an integer number (822868200).

Almost surely, 2^25215013395 is an apocalyptic number.

25215013395 is an abundant number, since it is smaller than the sum of its proper divisors (27448551405).

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

25215013395 is a wasteful number, since it uses less digits than its factorization.

25215013395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306177 (or 1306171 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 25215013395 in words is "twenty-five billion, two hundred fifteen million, thirteen thousand, three hundred ninety-five".