127881225 has 72 divisors (see below), whose sum is σ = 246636000. Its totient is φ = 63106560.

The previous prime is 127881203. The next prime is 127881227. The reversal of 127881225 is 522188721.

It is not a de Polignac number, because 127881225 - 2¹² = 127877129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127881225.

It is not an unprimeable number, because it can be changed into a prime (127881227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 256026 + ... + 256524.

It is an arithmetic number, because the mean of its divisors is an integer number (3425500).

Almost surely, 2^127881225 is an apocalyptic number.

127881225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127881225 is a deficient number, since it is larger than the sum of its proper divisors (118754775).

127881225 is a wasteful number, since it uses less digits than its factorization.

127881225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 591 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 127881225 is about 11308.4581177099. The cubic root of 127881225 is about 503.8124892976.

The spelling of 127881225 in words is "one hundred twenty-seven million, eight hundred eighty-one thousand, two hundred twenty-five".