16432972543825 has 12 divisors (see below), whose sum is σ = 20446431649308. Its totient is φ = 13101509844800.

The previous prime is 16432972543777. The next prime is 16432972543837. The reversal of 16432972543825 is 52834527923461.

It can be written as a sum of positive squares in 6 ways, for example, as 208180487824 + 16224792056001 = 456268^2 + 4028001^2 .

It is not a de Polignac number, because 16432972543825 - 2¹⁵ = 16432972511057 is a prime.

It is a super-2 number, since 2×16432972543825² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1121697286 + ... + 1121711935.

It is an arithmetic number, because the mean of its divisors is an integer number (1703869304109).

Almost surely, 2^{16432972543825} is an apocalyptic number.

It is an amenable number.

16432972543825 is a deficient number, since it is larger than the sum of its proper divisors (4013459105483).

16432972543825 is a wasteful number, since it uses less digits than its factorization.

16432972543825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243409524 (or 2243409519 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 61.

The spelling of 16432972543825 in words is "sixteen trillion, four hundred thirty-two billion, nine hundred seventy-two million, five hundred forty-three thousand, eight hundred twenty-five".