16499525 has 18 divisors (see below), whose sum is σ = 23801490. Its totient is φ = 11313120.

The previous prime is 16499519. The next prime is 16499531. The reversal of 16499525 is 52599461.

It is an interprime number because it is at equal distance from previous prime (16499519) and next prime (16499531).

It can be written as a sum of positive squares in 3 ways, for example, as 1623076 + 14876449 = 1274^2 + 3857^2 .

It is not a de Polignac number, because 16499525 - 2⁸ = 16499269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5510 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (1322305).

Almost surely, 2^16499525 is an apocalyptic number.

It is an amenable number.

16499525 is a deficient number, since it is larger than the sum of its proper divisors (7301965).

16499525 is a wasteful number, since it uses less digits than its factorization.

16499525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13493 (or 13481 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 16499525 is about 4061.9607334390. The cubic root of 16499525 is about 254.5797254993.

The spelling of 16499525 in words is "sixteen million, four hundred ninety-nine thousand, five hundred twenty-five".