16335425225 has 36 divisors (see below), whose sum is σ = 24375588300. Its totient is φ = 10815154560.

The previous prime is 16335425221. The next prime is 16335425243. The reversal of 16335425225 is 52252453361.

It can be written as a sum of positive squares in 6 ways, for example, as 2602632256 + 13732792969 = 51016^2 + 117187^2 .

It is not a de Polignac number, because 16335425225 - 2² = 16335425221 is a prime.

It is a super-2 number, since 2×16335425225² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16335425221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 194390 + ... + 265439.

It is an arithmetic number, because the mean of its divisors is an integer number (677099675).

Almost surely, 2^16335425225 is an apocalyptic number.

It is an amenable number.

16335425225 is a deficient number, since it is larger than the sum of its proper divisors (8040163075).

16335425225 is a wasteful number, since it uses less digits than its factorization.

16335425225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459882 (or 459870 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

Adding to 16335425225 its reverse (52252453361), we get a palindrome (68587878586).

The spelling of 16335425225 in words is "sixteen billion, three hundred thirty-five million, four hundred twenty-five thousand, two hundred twenty-five".