20025155012664 has 64 divisors (see below), whose sum is σ = 51679057904640. Its totient is φ = 6459572609280.

The previous prime is 20025155012657. The next prime is 20025155012789. The reversal of 20025155012664 is 46621055152002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33063084 + ... + 33663300.

It is an arithmetic number, because the mean of its divisors is an integer number (807485279760).

Almost surely, 2^{20025155012664} is an apocalyptic number.

20025155012664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20025155012664 is an abundant number, since it is smaller than the sum of its proper divisors (31653902891976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20025155012664 is a wasteful number, since it uses less digits than its factorization.

20025155012664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645100 (or 645096 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 20025155012664 in words is "twenty trillion, twenty-five billion, one hundred fifty-five million, twelve thousand, six hundred sixty-four".