16725042 has 40 divisors (see below), whose sum is σ = 39687516. Its totient is φ = 5246208.

The previous prime is 16724993. The next prime is 16725043. The reversal of 16725042 is 24052761.

It can be written as a sum of positive squares in 2 ways, for example, as 14356521 + 2368521 = 3789^2 + 1539^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 16724997 and 16725015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16725043) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 283 + ... + 5790.

Almost surely, 2^16725042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16725042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19843758).

16725042 is an abundant number, since it is smaller than the sum of its proper divisors (22962474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16725042 is a wasteful number, since it uses less digits than its factorization.

16725042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104 (or 6095 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 16725042 is about 4089.6261442826. The cubic root of 16725042 is about 255.7343537525.

The spelling of 16725042 in words is "sixteen million, seven hundred twenty-five thousand, forty-two".