18418342525 has 24 divisors (see below), whose sum is σ = 25265936448. Its totient is φ = 13206480000.

The previous prime is 18418342499. The next prime is 18418342529. The reversal of 18418342525 is 52524381481.

It is not a de Polignac number, because 18418342525 - 2²⁹ = 17881471613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18418342529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452136 + ... + 491185.

It is an arithmetic number, because the mean of its divisors is an integer number (1052747352).

Almost surely, 2^18418342525 is an apocalyptic number.

It is an amenable number.

18418342525 is a deficient number, since it is larger than the sum of its proper divisors (6847593923).

18418342525 is a wasteful number, since it uses less digits than its factorization.

18418342525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943413 (or 943408 counting only the distinct ones).

The product of its digits is 307200, while the sum is 43.

The spelling of 18418342525 in words is "eighteen billion, four hundred eighteen million, three hundred forty-two thousand, five hundred twenty-five".