625625693820 has 144 divisors (see below), whose sum is σ = 1966447042560. Its totient is φ = 160890807168.

The previous prime is 625625693813. The next prime is 625625693857. The reversal of 625625693820 is 28396526526.

625625693820 is a `hidden beast` number, since 6 + 2 + 5 + 6 + 256 + 9 + 382 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99877 + ... + 1123043.

It is an arithmetic number, because the mean of its divisors is an integer number (13655882240).

Almost surely, 2^625625693820 is an apocalyptic number.

625625693820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625625693820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983223521280).

625625693820 is an abundant number, since it is smaller than the sum of its proper divisors (1340821348740).

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

625625693820 is a wasteful number, since it uses less digits than its factorization.

625625693820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023304 (or 1023299 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 625625693820 in words is "six hundred twenty-five billion, six hundred twenty-five million, six hundred ninety-three thousand, eight hundred twenty".