16625945 has 24 divisors (see below), whose sum is σ = 23529600. Its totient is φ = 11243232.

The previous prime is 16625933. The next prime is 16625957. The reversal of 16625945 is 54952661.

It is an interprime number because it is at equal distance from previous prime (16625933) and next prime (16625957).

It is not a de Polignac number, because 16625945 - 2⁸ = 16625689 is a prime.

It is a super-3 number, since 3×16625945³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16625899 and 16625908.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18926 + ... + 19784.

It is an arithmetic number, because the mean of its divisors is an integer number (980400).

Almost surely, 2^16625945 is an apocalyptic number.

It is an amenable number.

16625945 is a deficient number, since it is larger than the sum of its proper divisors (6903655).

16625945 is an equidigital number, since it uses as much as digits as its factorization.

16625945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 950 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 16625945 is about 4077.4924892635. The cubic root of 16625945 is about 255.2282718209.

The spelling of 16625945 in words is "sixteen million, six hundred twenty-five thousand, nine hundred forty-five".