18733719225 has 24 divisors (see below), whose sum is σ = 33355628992. Its totient is φ = 9222753600.

The previous prime is 18733719163. The next prime is 18733719233. The reversal of 18733719225 is 52291733781.

It is not a de Polignac number, because 18733719225 - 2²⁷ = 18599501497 is a prime.

It is a super-2 number, since 2×18733719225² (a number of 21 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 23 ways as a sum of consecutive naturals, for example, 9606061 + ... + 9608010.

Almost surely, 2^18733719225 is an apocalyptic number.

18733719225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18733719225 is a deficient number, since it is larger than the sum of its proper divisors (14621909767).

18733719225 is a wasteful number, since it uses less digits than its factorization.

18733719225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19214097 (or 19214092 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The spelling of 18733719225 in words is "eighteen billion, seven hundred thirty-three million, seven hundred nineteen thousand, two hundred twenty-five".