20330207725 has 72 divisors (see below), whose sum is σ = 27554611392. Its totient is φ = 14842713600.

The previous prime is 20330207713. The next prime is 20330207731. The reversal of 20330207725 is 52770203302.

It is a de Polignac number, because none of the positive numbers 2^k-20330207725 is a prime.

It is a super-2 number, since 2×20330207725² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 66222022 + ... + 66222328.

It is an arithmetic number, because the mean of its divisors is an integer number (382702936).

Almost surely, 2^20330207725 is an apocalyptic number.

20330207725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20330207725 is a deficient number, since it is larger than the sum of its proper divisors (7224403667).

20330207725 is a wasteful number, since it uses less digits than its factorization.

20330207725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 31.

The spelling of 20330207725 in words is "twenty billion, three hundred thirty million, two hundred seven thousand, seven hundred twenty-five".