1625626571664 has 40 divisors (see below), whose sum is σ = 4215146999040. Its totient is φ = 539861112448.

The previous prime is 1625626571663. The next prime is 1625626571671. The reversal of 1625626571664 is 4661756265261.

It is not an unprimeable number, because it can be changed into a prime (1625626571663) 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, 62937312 + ... + 62963135.

It is an arithmetic number, because the mean of its divisors is an integer number (105378674976).

Almost surely, 2^{1625626571664} is an apocalyptic number.

It is an amenable number.

1625626571664 is an abundant number, since it is smaller than the sum of its proper divisors (2589520427376).

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

1625626571664 is a wasteful number, since it uses less digits than its factorization.

1625626571664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125900727 (or 125900721 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 57.

The spelling of 1625626571664 in words is "one trillion, six hundred twenty-five billion, six hundred twenty-six million, five hundred seventy-one thousand, six hundred sixty-four".