16091125 has 16 divisors (see below), whose sum is σ = 20283120. Its totient is φ = 12744000.

The previous prime is 16091107. The next prime is 16091137. The reversal of 16091125 is 52119061.

It can be written as a sum of positive squares in 8 ways, for example, as 1044484 + 15046641 = 1022^2 + 3879^2 .

It is not a de Polignac number, because 16091125 - 2⁵ = 16091093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 16091125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13035 + ... + 14215.

It is an arithmetic number, because the mean of its divisors is an integer number (1267695).

Almost surely, 2^16091125 is an apocalyptic number.

It is an amenable number.

16091125 is a deficient number, since it is larger than the sum of its proper divisors (4191995).

16091125 is a wasteful number, since it uses less digits than its factorization.

16091125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 16091125 is about 4011.3744527281. The cubic root of 16091125 is about 252.4616809478.

The spelling of 16091125 in words is "sixteen million, ninety-one thousand, one hundred twenty-five".