18525411072 has 144 divisors (see below), whose sum is σ = 62609191680. Its totient is φ = 5292960768.

The previous prime is 18525411067. The next prime is 18525411077. The reversal of 18525411072 is 27011452581.

It is a happy number.

18525411072 is a `hidden beast` number, since 1 + 8 + 5 + 2 + 541 + 107 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (18525411067) and next prime (18525411077).

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18525411077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143058 + ... + 239825.

Almost surely, 2^18525411072 is an apocalyptic number.

18525411072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18525411072 is an abundant number, since it is smaller than the sum of its proper divisors (44083780608).

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

18525411072 is an equidigital number, since it uses as much as digits as its factorization.

18525411072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382915 (or 382895 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 18525411072 in words is "eighteen billion, five hundred twenty-five million, four hundred eleven thousand, seventy-two".