1625646675 has 72 divisors (see below), whose sum is σ = 2877940800. Its totient is φ = 809515520.

The previous prime is 1625646619. The next prime is 1625646697. The reversal of 1625646675 is 5766465261.

It is not a de Polignac number, because 1625646675 - 2¹⁷ = 1625515603 is a prime.

It is a super-2 number, since 2×1625646675² = 5285454223877111250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3879616 + ... + 3880034.

It is an arithmetic number, because the mean of its divisors is an integer number (39971400).

Almost surely, 2^1625646675 is an apocalyptic number.

1625646675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1625646675 is a deficient number, since it is larger than the sum of its proper divisors (1252294125).

1625646675 is a wasteful number, since it uses less digits than its factorization.

1625646675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 623 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The square root of 1625646675 is about 40319.3089598520. The cubic root of 1625646675 is about 1175.8232769579.

The spelling of 1625646675 in words is "one billion, six hundred twenty-five million, six hundred forty-six thousand, six hundred seventy-five".