425345645 has 4 divisors (see below), whose sum is σ = 510414780. Its totient is φ = 340276512.

The previous prime is 425345633. The next prime is 425345677. The reversal of 425345645 is 546543524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225660484 + 199685161 = 15022^2 + 14131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425345645 is a prime.

It is a super-3 number, since 3×425345645³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 425345599 and 425345608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42534560 + ... + 42534569.

It is an arithmetic number, because the mean of its divisors is an integer number (127603695).

Almost surely, 2^425345645 is an apocalyptic number.

It is an amenable number.

425345645 is a deficient number, since it is larger than the sum of its proper divisors (85069135).

425345645 is an equidigital number, since it uses as much as digits as its factorization.

425345645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85069134.

The product of its digits is 288000, while the sum is 38.

The square root of 425345645 is about 20623.9095469312. The cubic root of 425345645 is about 752.0510642525.

The spelling of 425345645 in words is "four hundred twenty-five million, three hundred forty-five thousand, six hundred forty-five".