1485225840 has 160 divisors (see below), whose sum is σ = 5273233920. Its totient is φ = 338752512.

The previous prime is 1485225823. The next prime is 1485225869. The reversal of 1485225840 is 485225841.

It is a happy number.

1485225840 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1388826 + ... + 1389894.

It is an arithmetic number, because the mean of its divisors is an integer number (32957712).

Almost surely, 2^1485225840 is an apocalyptic number.

1485225840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1485225840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2636616960).

1485225840 is an abundant number, since it is smaller than the sum of its proper divisors (3788008080).

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

1485225840 is a wasteful number, since it uses less digits than its factorization.

1485225840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The square root of 1485225840 is about 38538.6278946202. The cubic root of 1485225840 is about 1140.9435709051.

Subtracting from 1485225840 its reverse (485225841), we obtain a palindrome (999999999).

The spelling of 1485225840 in words is "one billion, four hundred eighty-five million, two hundred twenty-five thousand, eight hundred forty".