165625642 has 16 divisors (see below), whose sum is σ = 305770752. Its totient is φ = 65522160.

The previous prime is 165625601. The next prime is 165625651. The reversal of 165625642 is 246526561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454834 + ... + 455197.

It is an arithmetic number, because the mean of its divisors is an integer number (19110672).

Almost surely, 2^165625642 is an apocalyptic number.

165625642 is a deficient number, since it is larger than the sum of its proper divisors (140145110).

165625642 is a wasteful number, since it uses less digits than its factorization.

165625642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910053.

The product of its digits is 86400, while the sum is 37.

The square root of 165625642 is about 12869.5626188305. The cubic root of 165625642 is about 549.1730183281.

The spelling of 165625642 in words is "one hundred sixty-five million, six hundred twenty-five thousand, six hundred forty-two".