127155225 has 12 divisors (see below), whose sum is σ = 210230096. Its totient is φ = 67816080.

The previous prime is 127155209. The next prime is 127155233. The reversal of 127155225 is 522551721.

It is not a de Polignac number, because 127155225 - 2⁴ = 127155209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 127155192 and 127155201.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 847627 + ... + 847776.

Almost surely, 2^127155225 is an apocalyptic number.

127155225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127155225 is a deficient number, since it is larger than the sum of its proper divisors (83074871).

127155225 is a wasteful number, since it uses less digits than its factorization.

127155225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695416 (or 1695411 counting only the distinct ones).

The product of its digits is 7000, while the sum is 30.

The square root of 127155225 is about 11276.3125621810. The cubic root of 127155225 is about 502.8572741992.

The spelling of 127155225 in words is "one hundred twenty-seven million, one hundred fifty-five thousand, two hundred twenty-five".