18142743025 has 81 divisors (see below), whose sum is σ = 25879052619. Its totient is φ = 12607452000.

The previous prime is 18142743011. The next prime is 18142743049. The reversal of 18142743025 is 52034724181.

The square root of 18142743025 is 134695.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6531387489 + 11611355536 = 80817^2 + 107756^2 .

It is not a de Polignac number, because 18142743025 - 2⁷ = 18142742897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 229654936 + ... + 229655014.

Almost surely, 2^18142743025 is an apocalyptic number.

18142743025 is the 134695-th square number.

18142743025 is the 67348-th centered octagonal number.

It is an amenable number.

18142743025 is a deficient number, since it is larger than the sum of its proper divisors (7736309594).

18142743025 is an equidigital number, since it uses as much as digits as its factorization.

18142743025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

It can be divided in two parts, 18142 and 743025, that added together give a palindrome (761167).

The spelling of 18142743025 in words is "eighteen billion, one hundred forty-two million, seven hundred forty-three thousand, twenty-five".