625695840 has 864 divisors, whose sum is σ = 2927957760. Its totient is φ = 123171840.

The previous prime is 625695839. The next prime is 625695857. The reversal of 625695840 is 48596526.

625695840 is a `hidden beast` number, since 6 + 2 + 5 + 69 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 32931351 + ... + 32931369.

It is an arithmetic number, because the mean of its divisors is an integer number (3388840).

Almost surely, 2^625695840 is an apocalyptic number.

625695840 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 625695840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463978880).

625695840 is an abundant number, since it is smaller than the sum of its proper divisors (2302261920).

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

625695840 is a wasteful number, since it uses less digits than its factorization.

625695840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 625695840 is about 25013.9129286084. The cubic root of 625695840 is about 855.3051542337.

The spelling of 625695840 in words is "six hundred twenty-five million, six hundred ninety-five thousand, eight hundred forty".