25163251 has 2 divisors, whose sum is σ = 25163252. Its totient is φ = 25163250.

The previous prime is 25163231. The next prime is 25163263. The reversal of 25163251 is 15236152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25163251 - 2¹⁷ = 25032179 is a prime.

It is not a weakly prime, because it can be changed into another prime (25163221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12581625 + 12581626.

It is an arithmetic number, because the mean of its divisors is an integer number (12581626).

Almost surely, 2^25163251 is an apocalyptic number.

25163251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25163251 is an equidigital number, since it uses as much as digits as its factorization.

25163251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 25163251 is about 5016.2985357732. The cubic root of 25163251 is about 293.0368585376.

The spelling of 25163251 in words is "twenty-five million, one hundred sixty-three thousand, two hundred fifty-one".