625304820 has 192 divisors, whose sum is σ = 2126315520. Its totient is φ = 134120448.

The previous prime is 625304803. The next prime is 625304831. The reversal of 625304820 is 28403526.

It is a super-2 number, since 2×625304820² = 782012235830464800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1013152 + ... + 1013768.

It is an arithmetic number, because the mean of its divisors is an integer number (11074560).

Almost surely, 2^625304820 is an apocalyptic number.

625304820 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 625304820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1063157760).

625304820 is an abundant number, since it is smaller than the sum of its proper divisors (1501010700).

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

625304820 is a wasteful number, since it uses less digits than its factorization.

625304820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 625304820 is about 25006.0956568593. The cubic root of 625304820 is about 855.1269467126.

The spelling of 625304820 in words is "six hundred twenty-five million, three hundred four thousand, eight hundred twenty".