25776251 has 2 divisors, whose sum is σ = 25776252. Its totient is φ = 25776250.

The previous prime is 25776241. The next prime is 25776253. The reversal of 25776251 is 15267752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25776251 - 2⁶ = 25776187 is a prime.

Together with 25776253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25776253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12888125 + 12888126.

It is an arithmetic number, because the mean of its divisors is an integer number (12888126).

Almost surely, 2^25776251 is an apocalyptic number.

25776251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25776251 is an equidigital number, since it uses as much as digits as its factorization.

25776251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 35.

The square root of 25776251 is about 5077.0317115417. The cubic root of 25776251 is about 295.3973425739.

The spelling of 25776251 in words is "twenty-five million, seven hundred seventy-six thousand, two hundred fifty-one".