25131012551 has 2 divisors, whose sum is σ = 25131012552. Its totient is φ = 25131012550.

The previous prime is 25131012523. The next prime is 25131012601. The reversal of 25131012551 is 15521013152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25131012551 - 2³⁴ = 7951143367 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25131012551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25131012521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565506275 + 12565506276.

It is an arithmetic number, because the mean of its divisors is an integer number (12565506276).

Almost surely, 2^25131012551 is an apocalyptic number.

25131012551 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131012551 is an equidigital number, since it uses as much as digits as its factorization.

25131012551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 25131012551 in words is "twenty-five billion, one hundred thirty-one million, twelve thousand, five hundred fifty-one".