16573417325 has 6 divisors (see below), whose sum is σ = 20551037514. Its totient is φ = 13258733840.

The previous prime is 16573417319. The next prime is 16573417339. The reversal of 16573417325 is 52371437561.

It can be written as a sum of positive squares in 3 ways, for example, as 4786840969 + 11786576356 = 69187^2 + 108566^2 .

It is not a de Polignac number, because 16573417325 - 2⁴ = 16573417309 is a prime.

It is a super-2 number, since 2×16573417325² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 331468322 + ... + 331468371.

It is an arithmetic number, because the mean of its divisors is an integer number (3425172919).

Almost surely, 2^16573417325 is an apocalyptic number.

It is an amenable number.

16573417325 is a deficient number, since it is larger than the sum of its proper divisors (3977620189).

16573417325 is an equidigital number, since it uses as much as digits as its factorization.

16573417325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662936703 (or 662936698 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The spelling of 16573417325 in words is "sixteen billion, five hundred seventy-three million, four hundred seventeen thousand, three hundred twenty-five".