165375416625 has 32 divisors (see below), whose sum is σ = 277031664000. Its totient is φ = 87608244800.

The previous prime is 165375416623. The next prime is 165375416639. The reversal of 165375416625 is 526614573561.

It is a happy number.

It is not a de Polignac number, because 165375416625 - 2¹ = 165375416623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165375416623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1423995 + ... + 1535744.

It is an arithmetic number, because the mean of its divisors is an integer number (8657239500).

Almost surely, 2^165375416625 is an apocalyptic number.

165375416625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165375416625 is a deficient number, since it is larger than the sum of its proper divisors (111656247375).

165375416625 is a wasteful number, since it uses less digits than its factorization.

165375416625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959906 (or 2959896 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 51.

The spelling of 165375416625 in words is "one hundred sixty-five billion, three hundred seventy-five million, four hundred sixteen thousand, six hundred twenty-five".