1625133888 has 112 divisors (see below), whose sum is σ = 5460146560. Its totient is φ = 464320512.

The previous prime is 1625133877. The next prime is 1625133889. The reversal of 1625133888 is 8883315261.

1625133888 is a `hidden beast` number, since 1 + 625 + 13 + 3 + 8 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625133889) 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 15 ways as a sum of consecutive naturals, for example, 55081 + ... + 79272.

Almost surely, 2^1625133888 is an apocalyptic number.

1625133888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1625133888 is an abundant number, since it is smaller than the sum of its proper divisors (3835012672).

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

1625133888 is a wasteful number, since it uses less digits than its factorization.

1625133888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134381 (or 134365 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 1625133888 is about 40312.9493835418. The cubic root of 1625133888 is about 1175.6996317427.

The spelling of 1625133888 in words is "one billion, six hundred twenty-five million, one hundred thirty-three thousand, eight hundred eighty-eight".