127725516 has 18 divisors (see below), whose sum is σ = 322861812. Its totient is φ = 42575160.

The previous prime is 127725503. The next prime is 127725527. The reversal of 127725516 is 615527721.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3547931 = 127725516 / (1 + 2 + 7 + 7 + 2 + 5 + 5 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1773930 + ... + 1774001.

Almost surely, 2^127725516 is an apocalyptic number.

It is an amenable number.

127725516 is an abundant number, since it is smaller than the sum of its proper divisors (195136296).

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

127725516 is a wasteful number, since it uses less digits than its factorization.

127725516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547941 (or 3547936 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 127725516 is about 11301.5713951645. The cubic root of 127725516 is about 503.6079244756.

The spelling of 127725516 in words is "one hundred twenty-seven million, seven hundred twenty-five thousand, five hundred sixteen".