18125502 has 24 divisors (see below), whose sum is σ = 38512536. Its totient is φ = 5685888.

The previous prime is 18125477. The next prime is 18125507. The reversal of 18125502 is 20552181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3493 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (1604689).

Almost surely, 2^18125502 is an apocalyptic number.

18125502 is an abundant number, since it is smaller than the sum of its proper divisors (20387034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18125502 is a wasteful number, since it uses less digits than its factorization.

18125502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10492 (or 10475 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 18125502 is about 4257.4055479834. The cubic root of 18125502 is about 262.6818187067.

Adding to 18125502 its reverse (20552181), we get a palindrome (38677683).

The spelling of 18125502 in words is "eighteen million, one hundred twenty-five thousand, five hundred two".