25860251 has 2 divisors, whose sum is σ = 25860252. Its totient is φ = 25860250.

The previous prime is 25860239. The next prime is 25860271. The reversal of 25860251 is 15206852.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25860251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25860271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930125 + 12930126.

It is an arithmetic number, because the mean of its divisors is an integer number (12930126).

Almost surely, 2^25860251 is an apocalyptic number.

25860251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25860251 is an equidigital number, since it uses as much as digits as its factorization.

25860251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 25860251 is about 5085.2975330850. The cubic root of 25860251 is about 295.7178762751.

The spelling of 25860251 in words is "twenty-five million, eight hundred sixty thousand, two hundred fifty-one".