25530597 has 6 divisors (see below), whose sum is σ = 36877542. Its totient is φ = 17020392.

The previous prime is 25530587. The next prime is 25530599. The reversal of 25530597 is 79503552.

It can be written as a sum of positive squares in only one way, i.e., 22268961 + 3261636 = 4719^2 + 1806^2 .

It is not a de Polignac number, because 25530597 - 2⁴ = 25530581 is a prime.

It is a super-2 number, since 2×25530597² = 1303622766352818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1418358 + ... + 1418375.

It is an arithmetic number, because the mean of its divisors is an integer number (6146257).

Almost surely, 2^25530597 is an apocalyptic number.

It is an amenable number.

25530597 is a deficient number, since it is larger than the sum of its proper divisors (11346945).

25530597 is a wasteful number, since it uses less digits than its factorization.

25530597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836739 (or 2836736 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 36.

The square root of 25530597 is about 5052.7811153859. The cubic root of 25530597 is about 294.4559425543.

The spelling of 25530597 in words is "twenty-five million, five hundred thirty thousand, five hundred ninety-seven".