16541168425 has 24 divisors (see below), whose sum is σ = 20776851000. Its totient is φ = 13061959680.

The previous prime is 16541168381. The next prime is 16541168431. The reversal of 16541168425 is 52486114561.

16541168425 = T₁₈₀ + T₁₈₁ + ... + T₄₆₂₉.

It can be written as a sum of positive squares in 12 ways, for example, as 10323372816 + 6217795609 = 101604^2 + 78853^2 .

It is not a de Polignac number, because 16541168425 - 2⁹ = 16541167913 is a prime.

It is a super-2 number, since 2×16541168425² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1366801 + ... + 1378849.

It is an arithmetic number, because the mean of its divisors is an integer number (865702125).

Almost surely, 2^16541168425 is an apocalyptic number.

It is an amenable number.

16541168425 is a deficient number, since it is larger than the sum of its proper divisors (4235682575).

16541168425 is a wasteful number, since it uses less digits than its factorization.

16541168425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12765 (or 12760 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The spelling of 16541168425 in words is "sixteen billion, five hundred forty-one million, one hundred sixty-eight thousand, four hundred twenty-five".