16165625 has 24 divisors (see below), whose sum is σ = 23123520. Its totient is φ = 11070000.

The previous prime is 16165613. The next prime is 16165627. The reversal of 16165625 is 52656161.

It is not a de Polignac number, because 16165625 - 2⁴ = 16165609 is a prime.

It is a super-2 number, since 2×16165625² = 522654863281250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16165591 and 16165600.

It is not an unprimeable number, because it can be changed into a prime (16165627) 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, 21506 + ... + 22244.

It is an arithmetic number, because the mean of its divisors is an integer number (963480).

Almost surely, 2^16165625 is an apocalyptic number.

It is an amenable number.

16165625 is a deficient number, since it is larger than the sum of its proper divisors (6957895).

16165625 is an frugal number, since it uses more digits than its factorization.

16165625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 751 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 16165625 is about 4020.6498231007. The cubic root of 16165625 is about 252.8507037328.

The spelling of 16165625 in words is "sixteen million, one hundred sixty-five thousand, six hundred twenty-five".