20625251712 has 64 divisors (see below), whose sum is σ = 59000133360. Its totient is φ = 6346229760.

The previous prime is 20625251711. The next prime is 20625251753. The reversal of 20625251712 is 21715252602.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625251711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060839 + ... + 2070822.

Almost surely, 2^20625251712 is an apocalyptic number.

It is an amenable number.

20625251712 is an abundant number, since it is smaller than the sum of its proper divisors (38374881648).

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

20625251712 is a wasteful number, since it uses less digits than its factorization.

20625251712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131691 (or 4131679 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 20625251712 in words is "twenty billion, six hundred twenty-five million, two hundred fifty-one thousand, seven hundred twelve".