1272625 has 8 divisors (see below), whose sum is σ = 1588392. Its totient is φ = 1018000.

The previous prime is 1272617. The next prime is 1272629. The reversal of 1272625 is 5262721.

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 1238769 = 184^2 + 1113^2 .

It is not a de Polignac number, because 1272625 - 2³ = 1272617 is a prime.

It is a super-3 number, since 3×1272625³ = 6183332576607421875, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

1272625 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272625.

It is not an unprimeable number, because it can be changed into a prime (1272629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4966 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (198549).

2^1272625 is an apocalyptic number.

It is an amenable number.

1272625 is a deficient number, since it is larger than the sum of its proper divisors (315767).

1272625 is an equidigital number, since it uses as much as digits as its factorization.

1272625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196 (or 10186 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 1272625 is about 1128.1068211832. The cubic root of 1272625 is about 108.3677734025.

1272625 divided by its sum of digits (25) gives a palindrome (50905).

The spelling of 1272625 in words is "one million, two hundred seventy-two thousand, six hundred twenty-five".