25361251 has 2 divisors, whose sum is σ = 25361252. Its totient is φ = 25361250.

The previous prime is 25361239. The next prime is 25361261. The reversal of 25361251 is 15216352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25361251 - 2⁷ = 25361123 is a prime.

It is not a weakly prime, because it can be changed into another prime (25361221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12680625 + 12680626.

It is an arithmetic number, because the mean of its divisors is an integer number (12680626).

Almost surely, 2^25361251 is an apocalyptic number.

25361251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25361251 is an equidigital number, since it uses as much as digits as its factorization.

25361251 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 25361251 is about 5035.9955321664. The cubic root of 25361251 is about 293.8034496975.

It can be divided in two parts, 253 and 61251, that added together give a square (61504 = 248²).

The spelling of 25361251 in words is "twenty-five million, three hundred sixty-one thousand, two hundred fifty-one".