1273419225 has 135 divisors (see below), whose sum is σ = 2596776039. Its totient is φ = 616636800.

The previous prime is 1273419223. The next prime is 1273419233. The reversal of 1273419225 is 5229143721.

The square root of 1273419225 is 35685.

It is a perfect power (a square), and thus also a powerful number.

1273419225 is a `hidden beast` number, since 12 + 7 + 3 + 419 + 225 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 1122719049 + 150700176 = 33507^2 + 12276^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 1273419225 - 2¹ = 1273419223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1273419225.

It is not an unprimeable number, because it can be changed into a prime (1273419223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 20875695 + ... + 20875755.

Almost surely, 2^1273419225 is an apocalyptic number.

1273419225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1273419225 is the 35685-th square number.

1273419225 is the 17843-rd centered octagonal number.

It is an amenable number.

1273419225 is an abundant number, since it is smaller than the sum of its proper divisors (1323356814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273419225 is an equidigital number, since it uses as much as digits as its factorization.

1273419225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 82 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The cubic root of 1273419225 is about 1083.9031224838.

Multiplying 1273419225 by its sum of digits (36), we get a square (45843092100 = 214110²).

The spelling of 1273419225 in words is "one billion, two hundred seventy-three million, four hundred nineteen thousand, two hundred twenty-five".