25051802913 has 12 divisors (see below), whose sum is σ = 36223216848. Its totient is φ = 16683996120.

The previous prime is 25051802899. The next prime is 25051802977. The reversal of 25051802913 is 31920815052.

25051802913 is a `hidden beast` number, since 2 + 50 + 518 + 0 + 2 + 91 + 3 = 666.

It is not a de Polignac number, because 25051802913 - 2¹⁰ = 25051801889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25051802213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1424595 + ... + 1442072.

It is an arithmetic number, because the mean of its divisors is an integer number (3018601404).

Almost surely, 2^25051802913 is an apocalyptic number.

It is an amenable number.

25051802913 is a deficient number, since it is larger than the sum of its proper divisors (11171413935).

25051802913 is a wasteful number, since it uses less digits than its factorization.

25051802913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867644 (or 2867641 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 25051802913 in words is "twenty-five billion, fifty-one million, eight hundred two thousand, nine hundred thirteen".