625153988 has 12 divisors (see below), whose sum is σ = 1158373692. Its totient is φ = 294190080.

The previous prime is 625153987. The next prime is 625154009. The reversal of 625153988 is 889351526.

It can be written as a sum of positive squares in 2 ways, for example, as 345662464 + 279491524 = 18592^2 + 16718^2 .

It is not an unprimeable number, because it can be changed into a prime (625153981) 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 3 ways as a sum of consecutive naturals, for example, 4596653 + ... + 4596788.

It is an arithmetic number, because the mean of its divisors is an integer number (96531141).

Almost surely, 2^625153988 is an apocalyptic number.

625153988 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

625153988 is a deficient number, since it is larger than the sum of its proper divisors (533219704).

625153988 is a wasteful number, since it uses less digits than its factorization.

625153988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9193462 (or 9193460 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 625153988 is about 25003.0795703249. The cubic root of 625153988 is about 855.0581851127.

The spelling of 625153988 in words is "six hundred twenty-five million, one hundred fifty-three thousand, nine hundred eighty-eight".