18410419225 has 27 divisors (see below), whose sum is σ = 25103120511. Its totient is φ = 13383968400.

The previous prime is 18410419219. The next prime is 18410419241. The reversal of 18410419225 is 52291401481.

The square root of 18410419225 is 135685.

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., 6627750921 + 11782668304 = 81411^2 + 108548^2 .

It is not a de Polignac number, because 18410419225 - 2³ = 18410419217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7461442 + ... + 7463908.

Almost surely, 2^18410419225 is an apocalyptic number.

18410419225 is the 135685-th square number.

18410419225 is the 67843-rd centered octagonal number.

It is an amenable number.

18410419225 is a deficient number, since it is larger than the sum of its proper divisors (6692701286).

18410419225 is an frugal number, since it uses more digits than its factorization.

18410419225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 18410419225 in words is "eighteen billion, four hundred ten million, four hundred nineteen thousand, two hundred twenty-five".