25001250251 has 2 divisors, whose sum is σ = 25001250252. Its totient is φ = 25001250250.

The previous prime is 25001250247. The next prime is 25001250299. The reversal of 25001250251 is 15205210052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25001250251 - 2² = 25001250247 is a prime.

It is a super-2 number, since 2×25001250251² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25001250851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500625125 + 12500625126.

It is an arithmetic number, because the mean of its divisors is an integer number (12500625126).

Almost surely, 2^25001250251 is an apocalyptic number.

25001250251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001250251 is an equidigital number, since it uses as much as digits as its factorization.

25001250251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 25001250251 in words is "twenty-five billion, one million, two hundred fifty thousand, two hundred fifty-one".