660631042425 has 12 divisors (see below), whose sum is σ = 1092243323600. Its totient is φ = 352336555920.

The previous prime is 660631042403. The next prime is 660631042453. The reversal of 660631042425 is 524240136066.

It is not a de Polignac number, because 660631042425 - 2⁷ = 660631042297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4404206875 + ... + 4404207024.

Almost surely, 2^660631042425 is an apocalyptic number.

It is an amenable number.

660631042425 is a deficient number, since it is larger than the sum of its proper divisors (431612281175).

660631042425 is a wasteful number, since it uses less digits than its factorization.

660631042425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808413912 (or 8808413907 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 660631042425 in words is "six hundred sixty billion, six hundred thirty-one million, forty-two thousand, four hundred twenty-five".