25899381092 has 12 divisors (see below), whose sum is σ = 48810372156. Its totient is φ = 11953560480.

The previous prime is 25899381091. The next prime is 25899381097. The reversal of 25899381092 is 29018399852.

It can be written as a sum of positive squares in 2 ways, for example, as 8637100096 + 17262280996 = 92936^2 + 131386^2 .

It is a super-2 number, since 2×25899381092² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25899381091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249032459 + ... + 249032562.

It is an arithmetic number, because the mean of its divisors is an integer number (4067531013).

Almost surely, 2^25899381092 is an apocalyptic number.

It is an amenable number.

25899381092 is a deficient number, since it is larger than the sum of its proper divisors (22910991064).

25899381092 is a wasteful number, since it uses less digits than its factorization.

25899381092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498065038 (or 498065036 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 25899381092 in words is "twenty-five billion, eight hundred ninety-nine million, three hundred eighty-one thousand, ninety-two".