25161712451 has 2 divisors, whose sum is σ = 25161712452. Its totient is φ = 25161712450.

The previous prime is 25161712421. The next prime is 25161712463. The reversal of 25161712451 is 15421716152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25161712451 - 2²⁶ = 25094603587 is a prime.

It is a super-2 number, since 2×25161712451² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25161712421) 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 as a sum of consecutive naturals, namely, 12580856225 + 12580856226.

It is an arithmetic number, because the mean of its divisors is an integer number (12580856226).

Almost surely, 2^25161712451 is an apocalyptic number.

25161712451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25161712451 is an equidigital number, since it uses as much as digits as its factorization.

25161712451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 35.

The spelling of 25161712451 in words is "twenty-five billion, one hundred sixty-one million, seven hundred twelve thousand, four hundred fifty-one".