1227225520 has 40 divisors (see below), whose sum is σ = 2945347200. Its totient is φ = 475054080.

The previous prime is 1227225481. The next prime is 1227225553. The reversal of 1227225520 is 255227221.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244945 + ... + 249904.

It is an arithmetic number, because the mean of its divisors is an integer number (73633680).

Almost surely, 2^1227225520 is an apocalyptic number.

1227225520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227225520 is an abundant number, since it is smaller than the sum of its proper divisors (1718121680).

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

1227225520 is a wasteful number, since it uses less digits than its factorization.

1227225520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494893 (or 494887 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 1227225520 is about 35031.7787159031. The cubic root of 1227225520 is about 1070.6350555115.

The spelling of 1227225520 in words is "one billion, two hundred twenty-seven million, two hundred twenty-five thousand, five hundred twenty".