127121025 has 24 divisors (see below), whose sum is σ = 210896224. Its totient is φ = 67564800.

The previous prime is 127121017. The next prime is 127121047. The reversal of 127121025 is 520121721.

It is not a de Polignac number, because 127121025 - 2³ = 127121017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127120992 and 127121010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20265 + ... + 25785.

Almost surely, 2^127121025 is an apocalyptic number.

127121025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127121025 is a deficient number, since it is larger than the sum of its proper divisors (83775199).

127121025 is a wasteful number, since it uses less digits than its factorization.

127121025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841 (or 5836 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 127121025 is about 11274.7960070238. The cubic root of 127121025 is about 502.8121868899.

Adding to 127121025 its reverse (520121721), we get a palindrome (647242746).

The spelling of 127121025 in words is "one hundred twenty-seven million, one hundred twenty-one thousand, twenty-five".