625550856 has 96 divisors (see below), whose sum is σ = 1828550880. Its totient is φ = 177811200.

The previous prime is 625550837. The next prime is 625550857. The reversal of 625550856 is 658055526.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (625550857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246876 + ... + 249396.

It is an arithmetic number, because the mean of its divisors is an integer number (19047405).

Almost surely, 2^625550856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625550856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914275440).

625550856 is an abundant number, since it is smaller than the sum of its proper divisors (1203000024).

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

625550856 is a wasteful number, since it uses less digits than its factorization.

625550856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 625550856 is about 25011.0146935305. The cubic root of 625550856 is about 855.2390863810.

The spelling of 625550856 in words is "six hundred twenty-five million, five hundred fifty thousand, eight hundred fifty-six".