22871117825 has 12 divisors (see below), whose sum is σ = 28895285628. Its totient is φ = 17951668800.

The previous prime is 22871117771. The next prime is 22871117831. The reversal of 22871117825 is 52871117822.

It is a Cunningham number, because it is equal to 151232²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1793014336 + 21078103489 = 42344^2 + 145183^2 .

It is not a de Polignac number, because 22871117825 - 2¹² = 22871113729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8629286 + ... + 8631935.

It is an arithmetic number, because the mean of its divisors is an integer number (2407940469).

Almost surely, 2^22871117825 is an apocalyptic number.

22871117825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22871117825 is a deficient number, since it is larger than the sum of its proper divisors (6024167803).

22871117825 is a wasteful number, since it uses less digits than its factorization.

22871117825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17261284 (or 17261279 counting only the distinct ones).

The product of its digits is 125440, while the sum is 44.

The spelling of 22871117825 in words is "twenty-two billion, eight hundred seventy-one million, one hundred seventeen thousand, eight hundred twenty-five".