16387325 has 12 divisors (see below), whose sum is σ = 20370720. Its totient is φ = 13077360.

The previous prime is 16387321. The next prime is 16387333. The reversal of 16387325 is 52378361.

It is not a de Polignac number, because 16387325 - 2² = 16387321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16387321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18032 + ... + 18918.

It is an arithmetic number, because the mean of its divisors is an integer number (1697560).

Almost surely, 2^16387325 is an apocalyptic number.

It is an amenable number.

16387325 is a deficient number, since it is larger than the sum of its proper divisors (3983395).

16387325 is an equidigital number, since it uses as much as digits as its factorization.

16387325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1631 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 16387325 is about 4048.1261096957. The cubic root of 16387325 is about 254.0013484955.

The spelling of 16387325 in words is "sixteen million, three hundred eighty-seven thousand, three hundred twenty-five".