20013777757625 has 32 divisors (see below), whose sum is σ = 25118318294784. Its totient is φ = 15920776704000.

The previous prime is 20013777757619. The next prime is 20013777757651. The reversal of 20013777757625 is 52675777731002.

It is not a de Polignac number, because 20013777757625 - 2⁴ = 20013777757609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17797844 + ... + 18888906.

It is an arithmetic number, because the mean of its divisors is an integer number (784947446712).

Almost surely, 2^{20013777757625} is an apocalyptic number.

20013777757625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20013777757625 is a deficient number, since it is larger than the sum of its proper divisors (5104540537159).

20013777757625 is a wasteful number, since it uses less digits than its factorization.

20013777757625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091906 (or 1091896 counting only the distinct ones).

The product of its (nonzero) digits is 30252600, while the sum is 59.

The spelling of 20013777757625 in words is "twenty trillion, thirteen billion, seven hundred seventy-seven million, seven hundred fifty-seven thousand, six hundred twenty-five".