631250625 has 20 divisors (see below), whose sum is σ = 1051750832. Its totient is φ = 336666000.

The previous prime is 631250611. The next prime is 631250639. The reversal of 631250625 is 526052136.

It is an interprime number because it is at equal distance from previous prime (631250611) and next prime (631250639).

It is not a de Polignac number, because 631250625 - 2⁵ = 631250593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631250592 and 631250601.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166459 + ... + 170208.

Almost surely, 2^631250625 is an apocalyptic number.

It is an amenable number.

631250625 is a deficient number, since it is larger than the sum of its proper divisors (420500207).

631250625 is an equidigital number, since it uses as much as digits as its factorization.

631250625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336690 (or 336675 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 631250625 is about 25124.7014907640. The cubic root of 631250625 is about 857.8287689225.

The spelling of 631250625 in words is "six hundred thirty-one million, two hundred fifty thousand, six hundred twenty-five".