127225520 has 40 divisors (see below), whose sum is σ = 311371440. Its totient is φ = 48211200.

The previous prime is 127225517. The next prime is 127225531. The reversal of 127225520 is 25522721.

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

It is a self number, because there is not a number n which added to its sum of digits gives 127225520.

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, 40331 + ... + 43370.

It is an arithmetic number, because the mean of its divisors is an integer number (7784286).

Almost surely, 2^127225520 is an apocalyptic number.

127225520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127225520 is an abundant number, since it is smaller than the sum of its proper divisors (184145920).

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

127225520 is a wasteful number, since it uses less digits than its factorization.

127225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83733 (or 83727 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 127225520 is about 11279.4290635652. The cubic root of 127225520 is about 502.9499216969.

The spelling of 127225520 in words is "one hundred twenty-seven million, two hundred twenty-five thousand, five hundred twenty".