23225556420 has 72 divisors (see below), whose sum is σ = 76855484160. Its totient is φ = 5630437440.

The previous prime is 23225556401. The next prime is 23225556421. The reversal of 23225556420 is 2465552232.

23225556420 is a `hidden beast` number, since 2 + 3 + 2 + 2 + 5 + 5 + 5 + 642 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23225556421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5863060 + ... + 5867019.

It is an arithmetic number, because the mean of its divisors is an integer number (1067437280).

Almost surely, 2^23225556420 is an apocalyptic number.

23225556420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23225556420 is an abundant number, since it is smaller than the sum of its proper divisors (53629927740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23225556420 is a wasteful number, since it uses less digits than its factorization.

23225556420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730105 (or 11730100 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 23225556420 in words is "twenty-three billion, two hundred twenty-five million, five hundred fifty-six thousand, four hundred twenty".