25557226 has 16 divisors (see below), whose sum is σ = 38891520. Its totient is φ = 12594960.

The previous prime is 25557157. The next prime is 25557229. The reversal of 25557226 is 62275552.

It is a junction number, because it is equal to n+sod(n) for n = 25557191 and 25557200.

It is not an unprimeable number, because it can be changed into a prime (25557229) 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, 60496 + ... + 60916.

It is an arithmetic number, because the mean of its divisors is an integer number (2430720).

Almost surely, 2^25557226 is an apocalyptic number.

25557226 is a deficient number, since it is larger than the sum of its proper divisors (13334294).

25557226 is a wasteful number, since it uses less digits than its factorization.

25557226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789.

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

The square root of 25557226 is about 5055.4155121018. The cubic root of 25557226 is about 294.5582817558.

The spelling of 25557226 in words is "twenty-five million, five hundred fifty-seven thousand, two hundred twenty-six".