25149574531 has 2 divisors, whose sum is σ = 25149574532. Its totient is φ = 25149574530.

The previous prime is 25149574493. The next prime is 25149574573. The reversal of 25149574531 is 13547594152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25149574531 - 2¹⁵ = 25149541763 is a prime.

It is a super-2 number, since 2×25149574531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25149574231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12574787265 + 12574787266.

It is an arithmetic number, because the mean of its divisors is an integer number (12574787266).

Almost surely, 2^25149574531 is an apocalyptic number.

25149574531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25149574531 is an equidigital number, since it uses as much as digits as its factorization.

25149574531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 46.

The spelling of 25149574531 in words is "twenty-five billion, one hundred forty-nine million, five hundred seventy-four thousand, five hundred thirty-one".