225727421540 has 48 divisors (see below), whose sum is σ = 507085980912. Its totient is φ = 84103643136.

The previous prime is 225727421527. The next prime is 225727421593. The reversal of 225727421540 is 45124727522.

It can be written as a sum of positive squares in 8 ways, for example, as 18500352256 + 207227069284 = 136016^2 + 455222^2 .

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, 3389207 + ... + 3455166.

It is an arithmetic number, because the mean of its divisors is an integer number (10564291269).

Almost surely, 2^225727421540 is an apocalyptic number.

225727421540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225727421540 is an abundant number, since it is smaller than the sum of its proper divisors (281358559372).

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

225727421540 is a wasteful number, since it uses less digits than its factorization.

225727421540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844496 (or 6844494 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 41.

The spelling of 225727421540 in words is "two hundred twenty-five billion, seven hundred twenty-seven million, four hundred twenty-one thousand, five hundred forty".