25426490731 has 16 divisors (see below), whose sum is σ = 26693637120. Its totient is φ = 24173265600.

The previous prime is 25426490717. The next prime is 25426490779. The reversal of 25426490731 is 13709462452.

It is a cyclic number.

It is not a de Polignac number, because 25426490731 - 2¹⁷ = 25426359659 is a prime.

It is a super-2 number, since 2×25426490731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25426490711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2657406 + ... + 2666956.

It is an arithmetic number, because the mean of its divisors is an integer number (1668352320).

Almost surely, 2^25426490731 is an apocalyptic number.

25426490731 is a deficient number, since it is larger than the sum of its proper divisors (1267146389).

25426490731 is a wasteful number, since it uses less digits than its factorization.

25426490731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 25426490731 in words is "twenty-five billion, four hundred twenty-six million, four hundred ninety thousand, seven hundred thirty-one".