127281725 has 18 divisors (see below), whose sum is σ = 163662330. Its totient is φ = 98079520.

The previous prime is 127281689. The next prime is 127281757. The reversal of 127281725 is 527182721.

It can be written as a sum of positive squares in 3 ways, for example, as 8602489 + 118679236 = 2933^2 + 10894^2 .

It is not a de Polignac number, because 127281725 - 2¹⁰ = 127280701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 303566 + ... + 303984.

Almost surely, 2^127281725 is an apocalyptic number.

It is an amenable number.

127281725 is a deficient number, since it is larger than the sum of its proper divisors (36380605).

127281725 is an frugal number, since it uses more digits than its factorization.

127281725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 453 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 127281725 is about 11281.9202709468. The cubic root of 127281725 is about 503.0239742890.

The spelling of 127281725 in words is "one hundred twenty-seven million, two hundred eighty-one thousand, seven hundred twenty-five".