20625058464 has 48 divisors (see below), whose sum is σ = 54536001408. Its totient is φ = 6824832512.

The previous prime is 20625058423. The next prime is 20625058547. The reversal of 20625058464 is 46485052602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770952 + ... + 797255.

It is an arithmetic number, because the mean of its divisors is an integer number (1136166696).

Almost surely, 2^20625058464 is an apocalyptic number.

20625058464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20625058464 is an abundant number, since it is smaller than the sum of its proper divisors (33910942944).

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

20625058464 is a wasteful number, since it uses less digits than its factorization.

20625058464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568357 (or 1568349 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 20625058464 in words is "twenty billion, six hundred twenty-five million, fifty-eight thousand, four hundred sixty-four".