20633427725 has 6 divisors (see below), whose sum is σ = 25585450410. Its totient is φ = 16506742160.

The previous prime is 20633427713. The next prime is 20633427779. The reversal of 20633427725 is 52772433602.

It can be written as a sum of positive squares in 3 ways, for example, as 5069867209 + 15563560516 = 71203^2 + 124754^2 .

It is not a de Polignac number, because 20633427725 - 2²² = 20629233421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412668530 + ... + 412668579.

It is an arithmetic number, because the mean of its divisors is an integer number (4264241735).

Almost surely, 2^20633427725 is an apocalyptic number.

20633427725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20633427725 is a deficient number, since it is larger than the sum of its proper divisors (4952022685).

20633427725 is an equidigital number, since it uses as much as digits as its factorization.

20633427725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825337119 (or 825337114 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 41.

The spelling of 20633427725 in words is "twenty billion, six hundred thirty-three million, four hundred twenty-seven thousand, seven hundred twenty-five".