25318057 has 2 divisors, whose sum is σ = 25318058. Its totient is φ = 25318056.

The previous prime is 25318039. The next prime is 25318061. The reversal of 25318057 is 75081352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25110121 + 207936 = 5011^2 + 456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25318057 is a prime.

It is not a weakly prime, because it can be changed into another prime (25318087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12659028 + 12659029.

It is an arithmetic number, because the mean of its divisors is an integer number (12659029).

Almost surely, 2^25318057 is an apocalyptic number.

It is an amenable number.

25318057 is a deficient number, since it is larger than the sum of its proper divisors (1).

25318057 is an equidigital number, since it uses as much as digits as its factorization.

25318057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25318057 is about 5031.7051781677. The cubic root of 25318057 is about 293.6365578557.

The spelling of 25318057 in words is "twenty-five million, three hundred eighteen thousand, fifty-seven".