25045897 has 2 divisors, whose sum is σ = 25045898. Its totient is φ = 25045896.

The previous prime is 25045883. The next prime is 25045901. The reversal of 25045897 is 79854052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 6245001 = 4336^2 + 2499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25045897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25045837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12522948 + 12522949.

It is an arithmetic number, because the mean of its divisors is an integer number (12522949).

Almost surely, 2^25045897 is an apocalyptic number.

It is an amenable number.

25045897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25045897 is an equidigital number, since it uses as much as digits as its factorization.

25045897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 25045897 is about 5004.5875953968. The cubic root of 25045897 is about 292.5806026193.

The spelling of 25045897 in words is "twenty-five million, forty-five thousand, eight hundred ninety-seven".