1272725 has 6 divisors (see below), whose sum is σ = 1578210. Its totient is φ = 1018160.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272725 is 5272721.

It can be written as a sum of positive squares in 3 ways, for example, as 22801 + 1249924 = 151^2 + 1118^2 .

It is not a de Polignac number, because 1272725 - 2¹⁰ = 1271701 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1272694 and 1272703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25430 + ... + 25479.

It is an arithmetic number, because the mean of its divisors is an integer number (263035).

2^1272725 is an apocalyptic number.

It is an amenable number.

1272725 is a deficient number, since it is larger than the sum of its proper divisors (305485).

1272725 is an equidigital number, since it uses as much as digits as its factorization.

1272725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50919 (or 50914 counting only the distinct ones).

The product of its digits is 1960, while the sum is 26.

The square root of 1272725 is about 1128.1511423564. The cubic root of 1272725 is about 108.3706117598.

The spelling of 1272725 in words is "one million, two hundred seventy-two thousand, seven hundred twenty-five".