25573897 has 2 divisors, whose sum is σ = 25573898. Its totient is φ = 25573896.

The previous prime is 25573859. The next prime is 25573901. The reversal of 25573897 is 79837552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 3474496 = 4701^2 + 1864^2 .

It is a cyclic number.

It is not a de Polignac number, because 25573897 - 2¹⁵ = 25541129 is a prime.

It is not a weakly prime, because it can be changed into another prime (25573817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12786948 + 12786949.

It is an arithmetic number, because the mean of its divisors is an integer number (12786949).

Almost surely, 2^25573897 is an apocalyptic number.

It is an amenable number.

25573897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25573897 is an equidigital number, since it uses as much as digits as its factorization.

25573897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 46.

The square root of 25573897 is about 5057.0640692006. The cubic root of 25573897 is about 294.6223147065.

The spelling of 25573897 in words is "twenty-five million, five hundred seventy-three thousand, eight hundred ninety-seven".