25338909057 has 48 divisors (see below), whose sum is σ = 42915889152. Its totient is φ = 13150210080.

The previous prime is 25338909049. The next prime is 25338909073. The reversal of 25338909057 is 75090983352.

It is not a de Polignac number, because 25338909057 - 2³ = 25338909049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25338909457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1776448 + ... + 1790654.

It is an arithmetic number, because the mean of its divisors is an integer number (894081024).

Almost surely, 2^25338909057 is an apocalyptic number.

It is an amenable number.

25338909057 is a deficient number, since it is larger than the sum of its proper divisors (17576980095).

25338909057 is a wasteful number, since it uses less digits than its factorization.

25338909057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15338 (or 15331 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 25338909057 in words is "twenty-five billion, three hundred thirty-eight million, nine hundred nine thousand, fifty-seven".