16525397 has 8 divisors (see below), whose sum is σ = 19272000. Its totient is φ = 14164332.

The previous prime is 16525391. The next prime is 16525403. The reversal of 16525397 is 79352561.

It is a happy number.

16525397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16525391) and next prime (16525403).

It is not a de Polignac number, because 16525397 - 2¹⁸ = 16263253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16525397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16525391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23747 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (2409000).

Almost surely, 2^16525397 is an apocalyptic number.

It is an amenable number.

16525397 is a deficient number, since it is larger than the sum of its proper divisors (2746603).

16525397 is an frugal number, since it uses more digits than its factorization.

16525397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48200 (or 48186 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 16525397 is about 4065.1441548855. The cubic root of 16525397 is about 254.7127201768.

The spelling of 16525397 in words is "sixteen million, five hundred twenty-five thousand, three hundred ninety-seven".