25013251 has 2 divisors, whose sum is σ = 25013252. Its totient is φ = 25013250.

The previous prime is 25013243. The next prime is 25013257. The reversal of 25013251 is 15231052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25013251 - 2³ = 25013243 is a prime.

It is not a weakly prime, because it can be changed into another prime (25013257) 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, 12506625 + 12506626.

It is an arithmetic number, because the mean of its divisors is an integer number (12506626).

Almost surely, 2^25013251 is an apocalyptic number.

25013251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013251 is an equidigital number, since it uses as much as digits as its factorization.

25013251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25013251 is about 5001.3249244575. The cubic root of 25013251 is about 292.4534262418.

The spelling of 25013251 in words is "twenty-five million, thirteen thousand, two hundred fifty-one".