25392251 has 2 divisors, whose sum is σ = 25392252. Its totient is φ = 25392250.

The previous prime is 25392233. The next prime is 25392293. The reversal of 25392251 is 15229352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25392251 - 2¹⁰ = 25391227 is a prime.

It is not a weakly prime, because it can be changed into another prime (25392221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12696125 + 12696126.

It is an arithmetic number, because the mean of its divisors is an integer number (12696126).

Almost surely, 2^25392251 is an apocalyptic number.

25392251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25392251 is an equidigital number, since it uses as much as digits as its factorization.

25392251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 25392251 is about 5039.0724344863. The cubic root of 25392251 is about 293.9231099156.

The spelling of 25392251 in words is "twenty-five million, three hundred ninety-two thousand, two hundred fifty-one".