16125989 has 16 divisors (see below), whose sum is σ = 18230784. Its totient is φ = 14137200.

The previous prime is 16125971. The next prime is 16126037. The reversal of 16125989 is 98952161.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16125989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16125589) 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, 48554 + ... + 48884.

It is an arithmetic number, because the mean of its divisors is an integer number (1139424).

Almost surely, 2^16125989 is an apocalyptic number.

It is an amenable number.

16125989 is a deficient number, since it is larger than the sum of its proper divisors (2104795).

16125989 is a wasteful number, since it uses less digits than its factorization.

16125989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its digits is 38880, while the sum is 41.

The square root of 16125989 is about 4015.7177440652. The cubic root of 16125989 is about 252.6438823131.

The spelling of 16125989 in words is "sixteen million, one hundred twenty-five thousand, nine hundred eighty-nine".