1625372736 has 56 divisors (see below), whose sum is σ = 4631277504. Its totient is φ = 500113920.

The previous prime is 1625372711. The next prime is 1625372743. The reversal of 1625372736 is 6372735261.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 323100 + ... + 328091.

It is an arithmetic number, because the mean of its divisors is an integer number (82701384).

Almost surely, 2^1625372736 is an apocalyptic number.

1625372736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1625372736 is an abundant number, since it is smaller than the sum of its proper divisors (3005904768).

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

1625372736 is a wasteful number, since it uses less digits than its factorization.

1625372736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651219 (or 651209 counting only the distinct ones).

The product of its digits is 317520, while the sum is 42.

The square root of 1625372736 is about 40315.9116974923. The cubic root of 1625372736 is about 1175.7572269459.

The spelling of 1625372736 in words is "one billion, six hundred twenty-five million, three hundred seventy-two thousand, seven hundred thirty-six".