127725256478 has 8 divisors (see below), whose sum is σ = 196260760080. Its totient is φ = 62305003120.

The previous prime is 127725256441. The next prime is 127725256543. The reversal of 127725256478 is 874652527721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×127725256478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778812458 + ... + 778812621.

It is an arithmetic number, because the mean of its divisors is an integer number (24532595010).

Almost surely, 2^127725256478 is an apocalyptic number.

127725256478 is a deficient number, since it is larger than the sum of its proper divisors (68535503602).

127725256478 is a wasteful number, since it uses less digits than its factorization.

127725256478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557625122.

The product of its digits is 13171200, while the sum is 56.

The spelling of 127725256478 in words is "one hundred twenty-seven billion, seven hundred twenty-five million, two hundred fifty-six thousand, four hundred seventy-eight".