20320607525 has 12 divisors (see below), whose sum is σ = 26293099872. Its totient is φ = 15549681840.

The previous prime is 20320607443. The next prime is 20320607563. The reversal of 20320607525 is 52570602302.

It is not a de Polignac number, because 20320607525 - 2³² = 16025640229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20320607491 and 20320607500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17669519 + ... + 17670668.

It is an arithmetic number, because the mean of its divisors is an integer number (2191091656).

Almost surely, 2^20320607525 is an apocalyptic number.

20320607525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20320607525 is a deficient number, since it is larger than the sum of its proper divisors (5972492347).

20320607525 is a wasteful number, since it uses less digits than its factorization.

20320607525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35340220 (or 35340215 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 20320607525 in words is "twenty billion, three hundred twenty million, six hundred seven thousand, five hundred twenty-five".