16925897 has 4 divisors (see below), whose sum is σ = 17921556. Its totient is φ = 15930240.

The previous prime is 16925893. The next prime is 16925911. The reversal of 16925897 is 79852961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 12243001 = 2164^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 16925897 - 2² = 16925893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16925893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497804 + ... + 497837.

It is an arithmetic number, because the mean of its divisors is an integer number (4480389).

Almost surely, 2^16925897 is an apocalyptic number.

16925897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16925897 is a deficient number, since it is larger than the sum of its proper divisors (995659).

16925897 is an equidigital number, since it uses as much as digits as its factorization.

16925897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995658.

The product of its digits is 272160, while the sum is 47.

The square root of 16925897 is about 4114.1095026749. The cubic root of 16925897 is about 256.7540076810.

The spelling of 16925897 in words is "sixteen million, nine hundred twenty-five thousand, eight hundred ninety-seven".