20512525430 has 16 divisors (see below), whose sum is σ = 37014629184. Its totient is φ = 8184547200.

The previous prime is 20512525409. The next prime is 20512525441. The reversal of 20512525430 is 3452521502.

It is a junction number, because it is equal to n+sod(n) for n = 20512525393 and 20512525402.

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, 2553662 + ... + 2561681.

It is an arithmetic number, because the mean of its divisors is an integer number (2313414324).

Almost surely, 2^20512525430 is an apocalyptic number.

20512525430 is a deficient number, since it is larger than the sum of its proper divisors (16502103754).

20512525430 is a wasteful number, since it uses less digits than its factorization.

20512525430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115751.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20512525430 in words is "twenty billion, five hundred twelve million, five hundred twenty-five thousand, four hundred thirty".