25556227 has 4 divisors (see below), whose sum is σ = 25614360. Its totient is φ = 25498096.

The previous prime is 25556213. The next prime is 25556291. The reversal of 25556227 is 72265552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25556227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25556192 and 25556201.

It is not an unprimeable number, because it can be changed into a prime (25556207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28402 + ... + 29287.

It is an arithmetic number, because the mean of its divisors is an integer number (6403590).

Almost surely, 2^25556227 is an apocalyptic number.

25556227 is a deficient number, since it is larger than the sum of its proper divisors (58133).

25556227 is an equidigital number, since it uses as much as digits as its factorization.

25556227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58132.

The product of its digits is 42000, while the sum is 34.

The square root of 25556227 is about 5055.3167062015. The cubic root of 25556227 is about 294.5544437342.

The spelling of 25556227 in words is "twenty-five million, five hundred fifty-six thousand, two hundred twenty-seven".