20691583325 has 12 divisors (see below), whose sum is σ = 29322929760. Its totient is φ = 14188514160.

The previous prime is 20691583277. The next prime is 20691583333. The reversal of 20691583325 is 52338519602.

It is not a de Polignac number, because 20691583325 - 2²⁶ = 20624474461 is a prime.

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, 59118635 + ... + 59118984.

It is an arithmetic number, because the mean of its divisors is an integer number (2443577480).

Almost surely, 2^20691583325 is an apocalyptic number.

20691583325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20691583325 is a deficient number, since it is larger than the sum of its proper divisors (8631346435).

20691583325 is a wasteful number, since it uses less digits than its factorization.

20691583325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118237636 (or 118237631 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 20691583325 in words is "twenty billion, six hundred ninety-one million, five hundred eighty-three thousand, three hundred twenty-five".