25211925939 has 32 divisors (see below), whose sum is σ = 37214691840. Its totient is φ = 15101368832.

The previous prime is 25211925917. The next prime is 25211925967. The reversal of 25211925939 is 93952911252.

It is a cyclic number.

It is not a de Polignac number, because 25211925939 - 2¹⁶ = 25211860403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25211920939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575944 + ... + 618170.

It is an arithmetic number, because the mean of its divisors is an integer number (1162959120).

Almost surely, 2^25211925939 is an apocalyptic number.

25211925939 is a deficient number, since it is larger than the sum of its proper divisors (12002765901).

25211925939 is a wasteful number, since it uses less digits than its factorization.

25211925939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42779.

The product of its digits is 437400, while the sum is 48.

The spelling of 25211925939 in words is "twenty-five billion, two hundred eleven million, nine hundred twenty-five thousand, nine hundred thirty-nine".