16535525 has 6 divisors (see below), whose sum is σ = 20504082. Its totient is φ = 13228400.

The previous prime is 16535501. The next prime is 16535537. The reversal of 16535525 is 52553561.

It can be written as a sum of positive squares in 3 ways, for example, as 27556 + 16507969 = 166^2 + 4063^2 .

It is not a de Polignac number, because 16535525 - 2⁸ = 16535269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16535491 and 16535500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330686 + ... + 330735.

It is an arithmetic number, because the mean of its divisors is an integer number (3417347).

Almost surely, 2^16535525 is an apocalyptic number.

It is an amenable number.

16535525 is a deficient number, since it is larger than the sum of its proper divisors (3968557).

16535525 is an equidigital number, since it uses as much as digits as its factorization.

16535525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661431 (or 661426 counting only the distinct ones).

The product of its digits is 22500, while the sum is 32.

The square root of 16535525 is about 4066.3896763591. The cubic root of 16535525 is about 254.7647452223.

The spelling of 16535525 in words is "sixteen million, five hundred thirty-five thousand, five hundred twenty-five".