25264850868 has 36 divisors (see below), whose sum is σ = 63882286468. Its totient is φ = 8419196160.

The previous prime is 25264850861. The next prime is 25264850873. The reversal of 25264850868 is 86805846252.

It is a happy number.

25264850868 is a `hidden beast` number, since 2 + 526 + 4 + 8 + 50 + 8 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6578507664 + 18686343204 = 81108^2 + 136698^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25264850861) 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, 28380 + ... + 226572.

Almost surely, 2^25264850868 is an apocalyptic number.

It is an amenable number.

25264850868 is an abundant number, since it is smaller than the sum of its proper divisors (38617435600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25264850868 is a wasteful number, since it uses less digits than its factorization.

25264850868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201744 (or 201739 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 25264850868 in words is "twenty-five billion, two hundred sixty-four million, eight hundred fifty thousand, eight hundred sixty-eight".