16432521267425 has 6 divisors (see below), whose sum is σ = 20376326371638. Its totient is φ = 13146017013920.

The previous prime is 16432521267413. The next prime is 16432521267433. The reversal of 16432521267425 is 52476212523461.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33649866721 + 16398871400704 = 183439^2 + 4049552^2 .

It is not a de Polignac number, because 16432521267425 - 2²⁴ = 16432504490209 is a prime.

It is a super-3 number, since 3×16432521267425³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 328650425324 + ... + 328650425373.

It is an arithmetic number, because the mean of its divisors is an integer number (3396054395273).

Almost surely, 2^{16432521267425} is an apocalyptic number.

It is an amenable number.

16432521267425 is a deficient number, since it is larger than the sum of its proper divisors (3943805104213).

16432521267425 is an equidigital number, since it uses as much as digits as its factorization.

16432521267425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657300850707 (or 657300850702 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 50.

The spelling of 16432521267425 in words is "sixteen trillion, four hundred thirty-two billion, five hundred twenty-one million, two hundred sixty-seven thousand, four hundred twenty-five".