16325501 has 4 divisors (see below), whose sum is σ = 16549212. Its totient is φ = 16101792.

The previous prime is 16325489. The next prime is 16325531. The reversal of 16325501 is 10552361.

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 5428900 + 10896601 = 2330^2 + 3301^2 .

It is a cyclic number.

It is not a de Polignac number, because 16325501 - 2¹⁸ = 16063357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16325531) 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, 111746 + ... + 111891.

It is an arithmetic number, because the mean of its divisors is an integer number (4137303).

Almost surely, 2^16325501 is an apocalyptic number.

It is an amenable number.

16325501 is a deficient number, since it is larger than the sum of its proper divisors (223711).

16325501 is an equidigital number, since it uses as much as digits as its factorization.

16325501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223710.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 16325501 is about 4040.4827681850. The cubic root of 16325501 is about 253.6815247138.

Adding to 16325501 its reverse (10552361), we get a palindrome (26877862).

The spelling of 16325501 in words is "sixteen million, three hundred twenty-five thousand, five hundred one".