225736804440 has 144 divisors (see below), whose sum is σ = 853423393680. Its totient is φ = 51596979840.

The previous prime is 225736804429. The next prime is 225736804453. The reversal of 225736804440 is 44408637522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6380796 + ... + 6416075.

It is an arithmetic number, because the mean of its divisors is an integer number (5926551345).

Almost surely, 2^225736804440 is an apocalyptic number.

225736804440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225736804440 is an abundant number, since it is smaller than the sum of its proper divisors (627686589240).

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

225736804440 is a wasteful number, since it uses less digits than its factorization.

225736804440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796902 (or 12796888 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 225736804440 in words is "two hundred twenty-five billion, seven hundred thirty-six million, eight hundred four thousand, four hundred forty".