1272444825 has 12 divisors (see below), whose sum is σ = 2103775568. Its totient is φ = 678637200.

The previous prime is 1272444821. The next prime is 1272444857. The reversal of 1272444825 is 5284442721.

It is not a de Polignac number, because 1272444825 - 2² = 1272444821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272444821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8482891 + ... + 8483040.

Almost surely, 2^1272444825 is an apocalyptic number.

1272444825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1272444825 is a deficient number, since it is larger than the sum of its proper divisors (831330743).

1272444825 is a wasteful number, since it uses less digits than its factorization.

1272444825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16965944 (or 16965939 counting only the distinct ones).

The product of its digits is 143360, while the sum is 39.

The square root of 1272444825 is about 35671.3445919831. The cubic root of 1272444825 is about 1083.6265901681.

The spelling of 1272444825 in words is "one billion, two hundred seventy-two million, four hundred forty-four thousand, eight hundred twenty-five".