25190609939 has 12 divisors (see below), whose sum is σ = 27692930160. Its totient is φ = 22897182000.

The previous prime is 25190609921. The next prime is 25190610017. The reversal of 25190609939 is 93990609152.

It is a de Polignac number, because none of the positive numbers 2^k-25190609939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25190602939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1218017 + ... + 1238525.

It is an arithmetic number, because the mean of its divisors is an integer number (2307744180).

Almost surely, 2^25190609939 is an apocalyptic number.

25190609939 is a deficient number, since it is larger than the sum of its proper divisors (2502320221).

25190609939 is a wasteful number, since it uses less digits than its factorization.

25190609939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30682 (or 30671 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 53.

The spelling of 25190609939 in words is "twenty-five billion, one hundred ninety million, six hundred nine thousand, nine hundred thirty-nine".