25502251 has 2 divisors, whose sum is σ = 25502252. Its totient is φ = 25502250.

The previous prime is 25502231. The next prime is 25502293. The reversal of 25502251 is 15220552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25502251 - 2⁹ = 25501739 is a prime.

It is not a weakly prime, because it can be changed into another prime (25502221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751125 + 12751126.

It is an arithmetic number, because the mean of its divisors is an integer number (12751126).

Almost surely, 2^25502251 is an apocalyptic number.

25502251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25502251 is an equidigital number, since it uses as much as digits as its factorization.

25502251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25502251 is about 5049.9753464745. The cubic root of 25502251 is about 294.3469264447.

The spelling of 25502251 in words is "twenty-five million, five hundred two thousand, two hundred fifty-one".