14226925981 has 16 divisors (see below), whose sum is σ = 14893937968. Its totient is φ = 13576896000.

The previous prime is 14226925927. The next prime is 14226926011. The reversal of 14226925981 is 18952962241.

It is the 48695-th star number.

It can be written as a sum of positive squares in 8 ways, for example, as 2426449081 + 11800476900 = 49259^2 + 108630^2 .

It is a 7-Lehmer number, since φ(14226925981) divides (14226925981-1)⁷.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14226925981 is a prime.

It is a super-2 number, since 2×14226925981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14226925381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474331 + ... + 503431.

It is an arithmetic number, because the mean of its divisors is an integer number (930871123).

Almost surely, 2^14226925981 is an apocalyptic number.

It is an amenable number.

14226925981 is a deficient number, since it is larger than the sum of its proper divisors (667011987).

14226925981 is a wasteful number, since it uses less digits than its factorization.

14226925981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29392.

The product of its digits is 622080, while the sum is 49.

The spelling of 14226925981 in words is "fourteen billion, two hundred twenty-six million, nine hundred twenty-five thousand, nine hundred eighty-one".