25022501551 has 2 divisors, whose sum is σ = 25022501552. Its totient is φ = 25022501550.

The previous prime is 25022501519. The next prime is 25022501561. The reversal of 25022501551 is 15510522052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25022501551 - 2⁵ = 25022501519 is a prime.

It is a super-2 number, since 2×25022501551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25022501561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12511250775 + 12511250776.

It is an arithmetic number, because the mean of its divisors is an integer number (12511250776).

Almost surely, 2^25022501551 is an apocalyptic number.

25022501551 is a deficient number, since it is larger than the sum of its proper divisors (1).

25022501551 is an equidigital number, since it uses as much as digits as its factorization.

25022501551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 25022501551 in words is "twenty-five billion, twenty-two million, five hundred one thousand, five hundred fifty-one".