25564265 has 8 divisors (see below), whose sum is σ = 30715200. Its totient is φ = 20426032.

The previous prime is 25564261. The next prime is 25564303. The reversal of 25564265 is 56246552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25564265 - 2² = 25564261 is a prime.

It is a super-4 number, since 4×25564265⁴ (a number of 31 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25564261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (3839400).

Almost surely, 2^25564265 is an apocalyptic number.

It is an amenable number.

25564265 is a deficient number, since it is larger than the sum of its proper divisors (5150935).

25564265 is an equidigital number, since it uses as much as digits as its factorization.

25564265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351.

The product of its digits is 72000, while the sum is 35.

The square root of 25564265 is about 5056.1116482926. Note that the first 3 decimals coincide. The cubic root of 25564265 is about 294.5853217982.

The spelling of 25564265 in words is "twenty-five million, five hundred sixty-four thousand, two hundred sixty-five".