1660425325 has 24 divisors (see below), whose sum is σ = 2219302400. Its totient is φ = 1225056960.

The previous prime is 1660425313. The next prime is 1660425329. The reversal of 1660425325 is 5235240661.

It is not a de Polignac number, because 1660425325 - 2⁵ = 1660425293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660425329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609316 + ... + 612034.

Almost surely, 2^1660425325 is an apocalyptic number.

It is an amenable number.

1660425325 is a deficient number, since it is larger than the sum of its proper divisors (558877075).

1660425325 is a wasteful number, since it uses less digits than its factorization.

1660425325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621 (or 4616 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 1660425325 is about 40748.3168364044. The cubic root of 1660425325 is about 1184.1492644652.

Adding to 1660425325 its reverse (5235240661), we get a palindrome (6895665986).

The spelling of 1660425325 in words is "one billion, six hundred sixty million, four hundred twenty-five thousand, three hundred twenty-five".