25573685 has 4 divisors (see below), whose sum is σ = 30688428. Its totient is φ = 20458944.

The previous prime is 25573663. The next prime is 25573733. The reversal of 25573685 is 58637552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3511876 + 22061809 = 1874^2 + 4697^2 .

It is a cyclic number.

It is not a de Polignac number, because 25573685 - 2¹² = 25569589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557364 + ... + 2557373.

It is an arithmetic number, because the mean of its divisors is an integer number (7672107).

Almost surely, 2^25573685 is an apocalyptic number.

It is an amenable number.

25573685 is a deficient number, since it is larger than the sum of its proper divisors (5114743).

25573685 is an equidigital number, since it uses as much as digits as its factorization.

25573685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114742.

The product of its digits is 252000, while the sum is 41.

The square root of 25573685 is about 5057.0431083787. The cubic root of 25573685 is about 294.6215005938.

The spelling of 25573685 in words is "twenty-five million, five hundred seventy-three thousand, six hundred eighty-five".