16213525 has 12 divisors (see below), whose sum is σ = 20212000. Its totient is φ = 12901680.

The previous prime is 16213513. The next prime is 16213553. The reversal of 16213525 is 52531261.

It is not a de Polignac number, because 16213525 - 2⁹ = 16213013 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 16213525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3346 + ... + 6604.

Almost surely, 2^16213525 is an apocalyptic number.

It is an amenable number.

16213525 is a deficient number, since it is larger than the sum of its proper divisors (3998475).

16213525 is a wasteful number, since it uses less digits than its factorization.

16213525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468 (or 3463 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 16213525 is about 4026.6021655982. The cubic root of 16213525 is about 253.1001962181.

Adding to 16213525 its reverse (52531261), we get a palindrome (68744786).

The spelling of 16213525 in words is "sixteen million, two hundred thirteen thousand, five hundred twenty-five".