1660225015 has 16 divisors (see below), whose sum is σ = 2119482720. Its totient is φ = 1244113920.

The previous prime is 1660225003. The next prime is 1660225033. The reversal of 1660225015 is 5105220661.

It is not a de Polignac number, because 1660225015 - 2²⁵ = 1626670583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28350 + ... + 64219.

It is an arithmetic number, because the mean of its divisors is an integer number (132467670).

Almost surely, 2^1660225015 is an apocalyptic number.

1660225015 is a deficient number, since it is larger than the sum of its proper divisors (459257705).

1660225015 is a wasteful number, since it uses less digits than its factorization.

1660225015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92802.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1660225015 is about 40745.8588693379. The cubic root of 1660225015 is about 1184.1016448434.

Adding to 1660225015 its reverse (5105220661), we get a palindrome (6765445676).

The spelling of 1660225015 in words is "one billion, six hundred sixty million, two hundred twenty-five thousand, fifteen".