1625733885 has 16 divisors (see below), whose sum is σ = 2754184896. Its totient is φ = 816054528.

The previous prime is 1625733839. The next prime is 1625733887. The reversal of 1625733885 is 5883375261.

It is not a de Polignac number, because 1625733885 - 2¹³ = 1625725693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625733887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3187459 + ... + 3187968.

It is an arithmetic number, because the mean of its divisors is an integer number (172136556).

Almost surely, 2^1625733885 is an apocalyptic number.

1625733885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625733885 is a deficient number, since it is larger than the sum of its proper divisors (1128451011).

1625733885 is a wasteful number, since it uses less digits than its factorization.

1625733885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375452.

The product of its digits is 1209600, while the sum is 48.

The square root of 1625733885 is about 40320.3904370977. The cubic root of 1625733885 is about 1175.8443027884.

The spelling of 1625733885 in words is "one billion, six hundred twenty-five million, seven hundred thirty-three thousand, eight hundred eighty-five".