25387969395 has 32 divisors (see below), whose sum is σ = 41768071488. Its totient is φ = 13158678528.

The previous prime is 25387969357. The next prime is 25387969403. The reversal of 25387969395 is 59396978352.

It is a happy number.

It is not a de Polignac number, because 25387969395 - 2⁷ = 25387969267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448947 + ... + 502323.

It is an arithmetic number, because the mean of its divisors is an integer number (1305252234).

Almost surely, 2^25387969395 is an apocalyptic number.

25387969395 is a deficient number, since it is larger than the sum of its proper divisors (16380102093).

25387969395 is a wasteful number, since it uses less digits than its factorization.

25387969395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54279.

The product of its digits is 110224800, while the sum is 66.

The spelling of 25387969395 in words is "twenty-five billion, three hundred eighty-seven million, nine hundred sixty-nine thousand, three hundred ninety-five".