645415161325 has 48 divisors (see below), whose sum is σ = 944096788224. Its totient is φ = 432381747200.

The previous prime is 645415161317. The next prime is 645415161353. The reversal of 645415161325 is 523161514546.

It is not a de Polignac number, because 645415161325 - 2³ = 645415161317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1248964 + ... + 1688413.

It is an arithmetic number, because the mean of its divisors is an integer number (19668683088).

Almost surely, 2^645415161325 is an apocalyptic number.

It is an amenable number.

645415161325 is a deficient number, since it is larger than the sum of its proper divisors (298681626899).

645415161325 is a wasteful number, since it uses less digits than its factorization.

645415161325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937462 (or 2937457 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 645415161325 in words is "six hundred forty-five billion, four hundred fifteen million, one hundred sixty-one thousand, three hundred twenty-five".