25000025251 has 2 divisors, whose sum is σ = 25000025252. Its totient is φ = 25000025250.

The previous prime is 25000025207. The next prime is 25000025279. The reversal of 25000025251 is 15252000052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25000025251 - 2¹⁹ = 24999500963 is a prime.

It is a super-2 number, since 2×25000025251² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25000085251) 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, 12500012625 + 12500012626.

It is an arithmetic number, because the mean of its divisors is an integer number (12500012626).

Almost surely, 2^25000025251 is an apocalyptic number.

25000025251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25000025251 is an equidigital number, since it uses as much as digits as its factorization.

25000025251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 22.

The spelling of 25000025251 in words is "twenty-five billion, twenty-five thousand, two hundred fifty-one".