842660425 has 6 divisors (see below), whose sum is σ = 1044898958. Its totient is φ = 674128320.

The previous prime is 842660419. The next prime is 842660449. The reversal of 842660425 is 524066248.

It can be written as a sum of positive squares in 3 ways, for example, as 3341584 + 839318841 = 1828^2 + 28971^2 .

It is not a de Polignac number, because 842660425 - 2⁹ = 842659913 is a prime.

It is a super-2 number, since 2×842660425² = 1420153183722361250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16853184 + ... + 16853233.

Almost surely, 2^842660425 is an apocalyptic number.

It is an amenable number.

842660425 is a deficient number, since it is larger than the sum of its proper divisors (202238533).

842660425 is a wasteful number, since it uses less digits than its factorization.

842660425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33706427 (or 33706422 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 842660425 is about 29028.6139007704. The cubic root of 842660425 is about 944.5338630319.

The spelling of 842660425 in words is "eight hundred forty-two million, six hundred sixty thousand, four hundred twenty-five".