25622565 has 16 divisors (see below), whose sum is σ = 41294400. Its totient is φ = 13565952.

The previous prime is 25622561. The next prime is 25622591. The reversal of 25622565 is 56522652.

It is not a de Polignac number, because 25622565 - 2² = 25622561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25622561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4060 + ... + 8229.

It is an arithmetic number, because the mean of its divisors is an integer number (2580900).

Almost surely, 2^25622565 is an apocalyptic number.

It is an amenable number.

25622565 is a deficient number, since it is larger than the sum of its proper divisors (15671835).

25622565 is a wasteful number, since it uses less digits than its factorization.

25622565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12436.

The product of its digits is 36000, while the sum is 33.

The square root of 25622565 is about 5061.8736649585. The cubic root of 25622565 is about 294.8090883890.

The spelling of 25622565 in words is "twenty-five million, six hundred twenty-two thousand, five hundred sixty-five".