646250425 has 12 divisors (see below), whose sum is σ = 801720016. Its totient is φ = 516762000.

The previous prime is 646250387. The next prime is 646250447. The reversal of 646250425 is 524052646.

It is not a de Polignac number, because 646250425 - 2¹¹ = 646248377 is a prime.

It is a super-2 number, since 2×646250425² = 835279223625361250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66742 + ... + 75808.

Almost surely, 2^646250425 is an apocalyptic number.

It is an amenable number.

646250425 is a deficient number, since it is larger than the sum of its proper divisors (155469591).

646250425 is a wasteful number, since it uses less digits than its factorization.

646250425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928 (or 11923 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 646250425 is about 25421.4559968543. The cubic root of 646250425 is about 864.5702365784.

The spelling of 646250425 in words is "six hundred forty-six million, two hundred fifty thousand, four hundred twenty-five".