127725645 has 16 divisors (see below), whose sum is σ = 204543360. Its totient is φ = 68059584.

The previous prime is 127725613. The next prime is 127725667. The reversal of 127725645 is 546527721.

It is not a de Polignac number, because 127725645 - 2⁵ = 127725613 is a prime.

It is a super-3 number, since 3×127725645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

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, 17391 + ... + 23619.

It is an arithmetic number, because the mean of its divisors is an integer number (12783960).

Almost surely, 2^127725645 is an apocalyptic number.

127725645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127725645 is a deficient number, since it is larger than the sum of its proper divisors (76817715).

127725645 is a wasteful number, since it uses less digits than its factorization.

127725645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7604.

The product of its digits is 117600, while the sum is 39.

The square root of 127725645 is about 11301.5771023340. The cubic root of 127725645 is about 503.6080940199.

The spelling of 127725645 in words is "one hundred twenty-seven million, seven hundred twenty-five thousand, six hundred forty-five".