25252442826 has 32 divisors (see below), whose sum is σ = 54522928320. Its totient is φ = 7750975104.

The previous prime is 25252442801. The next prime is 25252442827. The reversal of 25252442826 is 62824425252.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25252442827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363880 + ... + 427683.

It is an arithmetic number, because the mean of its divisors is an integer number (1703841510).

Almost surely, 2^25252442826 is an apocalyptic number.

25252442826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25252442826 is an abundant number, since it is smaller than the sum of its proper divisors (29270485494).

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

25252442826 is a wasteful number, since it uses less digits than its factorization.

25252442826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791990.

The product of its digits is 614400, while the sum is 42.

The spelling of 25252442826 in words is "twenty-five billion, two hundred fifty-two million, four hundred forty-two thousand, eight hundred twenty-six".