625819940 has 24 divisors (see below), whose sum is σ = 1356617472. Its totient is φ = 242252640.

The previous prime is 625819939. The next prime is 625819981. The reversal of 625819940 is 49918526.

It is a junction number, because it is equal to n+sod(n) for n = 625819891 and 625819900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504074 + ... + 505313.

It is an arithmetic number, because the mean of its divisors is an integer number (56525728).

Almost surely, 2^625819940 is an apocalyptic number.

It is an amenable number.

625819940 is an abundant number, since it is smaller than the sum of its proper divisors (730797532).

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

625819940 is a wasteful number, since it uses less digits than its factorization.

625819940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009427 (or 1009425 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 625819940 is about 25016.3934251123. The cubic root of 625819940 is about 855.3616973367.

The spelling of 625819940 in words is "six hundred twenty-five million, eight hundred nineteen thousand, nine hundred forty".