225772737640 has 64 divisors (see below), whose sum is σ = 513921957120. Its totient is φ = 89257440000.

The previous prime is 225772737611. The next prime is 225772737691. The reversal of 225772737640 is 46737277522.

225772737640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×225772737640² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257905 + ... + 2355775.

It is an arithmetic number, because the mean of its divisors is an integer number (8030030580).

Almost surely, 2^225772737640 is an apocalyptic number.

225772737640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225772737640 is an abundant number, since it is smaller than the sum of its proper divisors (288149219480).

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

225772737640 is a wasteful number, since it uses less digits than its factorization.

225772737640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98554 (or 98550 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 52.

The spelling of 225772737640 in words is "two hundred twenty-five billion, seven hundred seventy-two million, seven hundred thirty-seven thousand, six hundred forty".