16245516025 has 6 divisors (see below), whose sum is σ = 20144439902. Its totient is φ = 12996412800.

The previous prime is 16245516017. The next prime is 16245516103. The reversal of 16245516025 is 52061554261.

It can be written as a sum of positive squares in 3 ways, for example, as 1235100736 + 15010415289 = 35144^2 + 122517^2 .

It is not a de Polignac number, because 16245516025 - 2³ = 16245516017 is a prime.

It is a Duffinian 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, 324910296 + ... + 324910345.

Almost surely, 2^16245516025 is an apocalyptic number.

It is an amenable number.

16245516025 is a deficient number, since it is larger than the sum of its proper divisors (3898923877).

16245516025 is an equidigital number, since it uses as much as digits as its factorization.

16245516025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649820651 (or 649820646 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 16245516025 in words is "sixteen billion, two hundred forty-five million, five hundred sixteen thousand, twenty-five".