18025446810 has 128 divisors (see below), whose sum is σ = 50635943424. Its totient is φ = 4021355520.

The previous prime is 18025446809. The next prime is 18025446821. The reversal of 18025446810 is 1864452081.

It is a super-2 number, since 2×18025446810² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2188500 + ... + 2196720.

It is an arithmetic number, because the mean of its divisors is an integer number (395593308).

Almost surely, 2^18025446810 is an apocalyptic number.

18025446810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18025446810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25317971712).

18025446810 is an abundant number, since it is smaller than the sum of its proper divisors (32610496614).

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

18025446810 is a wasteful number, since it uses less digits than its factorization.

18025446810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488.

The product of its (nonzero) digits is 61440, while the sum is 39.

Adding to 18025446810 its reverse (1864452081), we get a palindrome (19889898891).

The spelling of 18025446810 in words is "eighteen billion, twenty-five million, four hundred forty-six thousand, eight hundred ten".