645314425 has 36 divisors (see below), whose sum is σ = 930678528. Its totient is φ = 434808000.

The previous prime is 645314419. The next prime is 645314503. The reversal of 645314425 is 524413546.

It is a de Polignac number, because none of the positive numbers 2^k-645314425 is a prime.

It is a super-2 number, since 2×645314425² = 832861414226161250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 650680 + ... + 651670.

Almost surely, 2^645314425 is an apocalyptic number.

It is an amenable number.

645314425 is a deficient number, since it is larger than the sum of its proper divisors (285364103).

645314425 is an equidigital number, since it uses as much as digits as its factorization.

645314425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1064 counting only the distinct ones).

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

The square root of 645314425 is about 25403.0396803217. The cubic root of 645314425 is about 864.1526333746.

The spelling of 645314425 in words is "six hundred forty-five million, three hundred fourteen thousand, four hundred twenty-five".