625257630 has 80 divisors (see below), whose sum is σ = 1688751504. Its totient is φ = 165991680.

The previous prime is 625257623. The next prime is 625257641. The reversal of 625257630 is 36752526.

It is a happy number.

625257630 is a `hidden beast` number, since 6 + 2 + 52 + 576 + 30 = 666.

It is a super-3 number, since 3×625257630³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 193609 + ... + 196811.

Almost surely, 2^625257630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625257630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844375752).

625257630 is an abundant number, since it is smaller than the sum of its proper divisors (1063493874).

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

625257630 is a wasteful number, since it uses less digits than its factorization.

625257630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463 (or 3454 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 625257630 is about 25005.1520691237. The cubic root of 625257630 is about 855.1054348278.

The spelling of 625257630 in words is "six hundred twenty-five million, two hundred fifty-seven thousand, six hundred thirty".