20925123730 has 32 divisors (see below), whose sum is σ = 43055038080. Its totient is φ = 7172816640.

The previous prime is 20925123691. The next prime is 20925123731. The reversal of 20925123730 is 3732152902.

It is a super-2 number, since 2×20925123730² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20925123731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333066 + ... + 390874.

It is an arithmetic number, because the mean of its divisors is an integer number (1345469940).

Almost surely, 2^20925123730 is an apocalyptic number.

20925123730 is an abundant number, since it is smaller than the sum of its proper divisors (22129914350).

20925123730 is a wasteful number, since it uses less digits than its factorization.

20925123730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62994.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 20925123730 in words is "twenty billion, nine hundred twenty-five million, one hundred twenty-three thousand, seven hundred thirty".