25426331525 has 72 divisors (see below), whose sum is σ = 40285903680. Its totient is φ = 15799069440.

The previous prime is 25426331501. The next prime is 25426331531. The reversal of 25426331525 is 52513362452.

It is not a de Polignac number, because 25426331525 - 2¹⁴ = 25426315141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 511577 + ... + 559073.

It is an arithmetic number, because the mean of its divisors is an integer number (559526440).

Almost surely, 2^25426331525 is an apocalyptic number.

25426331525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25426331525 is a deficient number, since it is larger than the sum of its proper divisors (14859572155).

25426331525 is a wasteful number, since it uses less digits than its factorization.

25426331525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47563 (or 47551 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

Adding to 25426331525 its reverse (52513362452), we get a palindrome (77939693977).

The spelling of 25426331525 in words is "twenty-five billion, four hundred twenty-six million, three hundred thirty-one thousand, five hundred twenty-five".