20675125520 has 40 divisors (see below), whose sum is σ = 54936763584. Its totient is φ = 7088614272.

The previous prime is 20675125507. The next prime is 20675125567. The reversal of 20675125520 is 2552157602.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18459374 + ... + 18460493.

Almost surely, 2^20675125520 is an apocalyptic number.

20675125520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20675125520 is an abundant number, since it is smaller than the sum of its proper divisors (34261638064).

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

20675125520 is a wasteful number, since it uses less digits than its factorization.

20675125520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36919887 (or 36919881 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 20675125520 in words is "twenty billion, six hundred seventy-five million, one hundred twenty-five thousand, five hundred twenty".