20173525404 has 24 divisors (see below), whose sum is σ = 48589997568. Its totient is φ = 6507588720.

The previous prime is 20173525397. The next prime is 20173525417. The reversal of 20173525404 is 40452537102.

It is a super-2 number, since 2×20173525404² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 27114582 + ... + 27115325.

It is an arithmetic number, because the mean of its divisors is an integer number (2024583232).

Almost surely, 2^20173525404 is an apocalyptic number.

It is an amenable number.

20173525404 is an abundant number, since it is smaller than the sum of its proper divisors (28416472164).

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

20173525404 is a wasteful number, since it uses less digits than its factorization.

20173525404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54229945 (or 54229943 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20173525404 in words is "twenty billion, one hundred seventy-three million, five hundred twenty-five thousand, four hundred four".