1373646625 has 64 divisors (see below), whose sum is σ = 1935198720. Its totient is φ = 966470400.

The previous prime is 1373646623. The next prime is 1373646649. The reversal of 1373646625 is 5266463731.

It is not a de Polignac number, because 1373646625 - 2¹ = 1373646623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1373646623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4853734 + ... + 4854016.

It is an arithmetic number, because the mean of its divisors is an integer number (30237480).

Almost surely, 2^1373646625 is an apocalyptic number.

It is an amenable number.

1373646625 is a deficient number, since it is larger than the sum of its proper divisors (561552095).

1373646625 is a wasteful number, since it uses less digits than its factorization.

1373646625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 433 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 1373646625 is about 37062.7390380150. The cubic root of 1373646625 is about 1111.6250916956.

The spelling of 1373646625 in words is "one billion, three hundred seventy-three million, six hundred forty-six thousand, six hundred twenty-five".