16543725 has 36 divisors (see below), whose sum is σ = 30081408. Its totient is φ = 8016800.

The previous prime is 16543697. The next prime is 16543733. The reversal of 16543725 is 52734561.

It is not a de Polignac number, because 16543725 - 2¹⁷ = 16412653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8164 + ... + 9986.

Almost surely, 2^16543725 is an apocalyptic number.

16543725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16543725 is a deficient number, since it is larger than the sum of its proper divisors (13537683).

16543725 is a wasteful number, since it uses less digits than its factorization.

16543725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1842 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 16543725 is about 4067.3978167866. The cubic root of 16543725 is about 254.8068510456.

The spelling of 16543725 in words is "sixteen million, five hundred forty-three thousand, seven hundred twenty-five".