20251572065252 has 24 divisors (see below), whose sum is σ = 38667898674720. Its totient is φ = 9203877517760.

The previous prime is 20251572065213. The next prime is 20251572065273. The reversal of 20251572065252 is 25256027515202.

It is a super-2 number, since 2×20251572065252² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34266473 + ... + 34852464.

It is an arithmetic number, because the mean of its divisors is an integer number (1611162444780).

Almost surely, 2^{20251572065252} is an apocalyptic number.

20251572065252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20251572065252 is a deficient number, since it is larger than the sum of its proper divisors (18416326609468).

20251572065252 is a wasteful number, since it uses less digits than its factorization.

20251572065252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69125611 (or 69125609 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 20251572065252 in words is "twenty trillion, two hundred fifty-one billion, five hundred seventy-two million, sixty-five thousand, two hundred fifty-two".