18725272456 has 32 divisors (see below), whose sum is σ = 38319806880. Its totient is φ = 8507462400.

The previous prime is 18725272453. The next prime is 18725272459. The reversal of 18725272456 is 65427252781.

It is an interprime number because it is at equal distance from previous prime (18725272453) and next prime (18725272459).

It is not an unprimeable number, because it can be changed into a prime (18725272451) 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 7 ways as a sum of consecutive naturals, for example, 140935 + ... + 239401.

It is an arithmetic number, because the mean of its divisors is an integer number (1197493965).

Almost surely, 2^18725272456 is an apocalyptic number.

It is an amenable number.

18725272456 is an abundant number, since it is smaller than the sum of its proper divisors (19594534424).

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

18725272456 is a wasteful number, since it uses less digits than its factorization.

18725272456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100645 (or 100641 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The spelling of 18725272456 in words is "eighteen billion, seven hundred twenty-five million, two hundred seventy-two thousand, four hundred fifty-six".