25244501251 has 2 divisors, whose sum is σ = 25244501252. Its totient is φ = 25244501250.

The previous prime is 25244501213. The next prime is 25244501291. The reversal of 25244501251 is 15210544252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25244501251 - 2⁷ = 25244501123 is a prime.

It is not a weakly prime, because it can be changed into another prime (25244501201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12622250625 + 12622250626.

It is an arithmetic number, because the mean of its divisors is an integer number (12622250626).

Almost surely, 2^25244501251 is an apocalyptic number.

25244501251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25244501251 is an equidigital number, since it uses as much as digits as its factorization.

25244501251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 25244501251 in words is "twenty-five billion, two hundred forty-four million, five hundred one thousand, two hundred fifty-one".