127161025 has 6 divisors (see below), whose sum is σ = 157679702. Its totient is φ = 101728800.

The previous prime is 127161017. The next prime is 127161029. The reversal of 127161025 is 520161721.

It can be written as a sum of positive squares in 3 ways, for example, as 103041 + 127057984 = 321^2 + 11272^2 .

It is not a de Polignac number, because 127161025 - 2³ = 127161017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5086441 = 127161025 / (1 + 2 + 7 + 1 + 6 + 1 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127161029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2543196 + ... + 2543245.

Almost surely, 2^127161025 is an apocalyptic number.

It is an amenable number.

127161025 is a deficient number, since it is larger than the sum of its proper divisors (30518677).

127161025 is an equidigital number, since it uses as much as digits as its factorization.

127161025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086451 (or 5086446 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 127161025 is about 11276.5697355180. The cubic root of 127161025 is about 502.8649197832.

The spelling of 127161025 in words is "one hundred twenty-seven million, one hundred sixty-one thousand, twenty-five".