25564294227 has 16 divisors (see below), whose sum is σ = 35184691872. Its totient is φ = 16498056960.

The previous prime is 25564294199. The next prime is 25564294237. The reversal of 25564294227 is 72249246552.

It is not a de Polignac number, because 25564294227 - 2⁷ = 25564294099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25564294237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562674 + ... + 606407.

It is an arithmetic number, because the mean of its divisors is an integer number (2199043242).

Almost surely, 2^25564294227 is an apocalyptic number.

25564294227 is a deficient number, since it is larger than the sum of its proper divisors (9620397645).

25564294227 is a wasteful number, since it uses less digits than its factorization.

25564294227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169318.

The product of its digits is 2419200, while the sum is 48.

The spelling of 25564294227 in words is "twenty-five billion, five hundred sixty-four million, two hundred ninety-four thousand, two hundred twenty-seven".