25597057 has 2 divisors, whose sum is σ = 25597058. Its totient is φ = 25597056.

The previous prime is 25597049. The next prime is 25597063. The reversal of 25597057 is 75079552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16573041 + 9024016 = 4071^2 + 3004^2 .

It is a cyclic number.

It is not a de Polignac number, because 25597057 - 2³ = 25597049 is a prime.

It is a super-2 number, since 2×25597057² = 1310418654122498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25597037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12798528 + 12798529.

It is an arithmetic number, because the mean of its divisors is an integer number (12798529).

Almost surely, 2^25597057 is an apocalyptic number.

It is an amenable number.

25597057 is a deficient number, since it is larger than the sum of its proper divisors (1).

25597057 is an equidigital number, since it uses as much as digits as its factorization.

25597057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110250, while the sum is 40.

The square root of 25597057 is about 5059.3534171868. The cubic root of 25597057 is about 294.7112255994.

The spelling of 25597057 in words is "twenty-five million, five hundred ninety-seven thousand, fifty-seven".