127825505 has 4 divisors (see below), whose sum is σ = 153390612. Its totient is φ = 102260400.

The previous prime is 127825501. The next prime is 127825507. The reversal of 127825505 is 505528721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505528721 = 229 ⋅2207549.

It can be written as a sum of positive squares in 2 ways, for example, as 55115776 + 72709729 = 7424^2 + 8527^2 .

It is not a de Polignac number, because 127825505 - 2² = 127825501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127825501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12782546 + ... + 12782555.

It is an arithmetic number, because the mean of its divisors is an integer number (38347653).

Almost surely, 2^127825505 is an apocalyptic number.

It is an amenable number.

127825505 is a deficient number, since it is larger than the sum of its proper divisors (25565107).

127825505 is an equidigital number, since it uses as much as digits as its factorization.

127825505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25565106.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 127825505 is about 11305.9942066145. The cubic root of 127825505 is about 503.7393054765.

The spelling of 127825505 in words is "one hundred twenty-seven million, eight hundred twenty-five thousand, five hundred five".