20134774925 has 12 divisors (see below), whose sum is σ = 26435775636. Its totient is φ = 15160300800.

The previous prime is 20134774901. The next prime is 20134774963. The reversal of 20134774925 is 52947743102.

It can be written as a sum of positive squares in 6 ways, for example, as 238826116 + 19895948809 = 15454^2 + 141053^2 .

It is not a de Polignac number, because 20134774925 - 2²⁴ = 20117997709 is a prime.

It is a super-2 number, since 2×20134774925² (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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23687546 + ... + 23688395.

It is an arithmetic number, because the mean of its divisors is an integer number (2202981303).

Almost surely, 2^20134774925 is an apocalyptic number.

20134774925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20134774925 is a deficient number, since it is larger than the sum of its proper divisors (6301000711).

20134774925 is a wasteful number, since it uses less digits than its factorization.

20134774925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47375968 (or 47375963 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 20134774925 in words is "twenty billion, one hundred thirty-four million, seven hundred seventy-four thousand, nine hundred twenty-five".