16677625 has 16 divisors (see below), whose sum is σ = 21035664. Its totient is φ = 13200000.

The previous prime is 16677623. The next prime is 16677643. The reversal of 16677625 is 52677661.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 55696 + 16621929 = 236^2 + 4077^2 .

It is not a de Polignac number, because 16677625 - 2¹ = 16677623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16677623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11965 + ... + 13285.

It is an arithmetic number, because the mean of its divisors is an integer number (1314729).

Almost surely, 2^16677625 is an apocalyptic number.

It is an amenable number.

16677625 is a deficient number, since it is larger than the sum of its proper divisors (4358039).

16677625 is a wasteful number, since it uses less digits than its factorization.

16677625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437 (or 1427 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 16677625 is about 4083.8248003557. The cubic root of 16677625 is about 255.4924483607.

The spelling of 16677625 in words is "sixteen million, six hundred seventy-seven thousand, six hundred twenty-five".