1284071225 has 6 divisors (see below), whose sum is σ = 1592248350. Its totient is φ = 1027256960.

The previous prime is 1284071197. The next prime is 1284071249. The reversal of 1284071225 is 5221704821.

It can be written as a sum of positive squares in 3 ways, for example, as 7295401 + 1276775824 = 2701^2 + 35732^2 .

It is not a de Polignac number, because 1284071225 - 2¹⁴ = 1284054841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1284071191 and 1284071200.

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, 25681400 + ... + 25681449.

It is an arithmetic number, because the mean of its divisors is an integer number (265374725).

Almost surely, 2^1284071225 is an apocalyptic number.

It is an amenable number.

1284071225 is a deficient number, since it is larger than the sum of its proper divisors (308177125).

1284071225 is an equidigital number, since it uses as much as digits as its factorization.

1284071225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51362859 (or 51362854 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 1284071225 is about 35833.9395685152. The cubic root of 1284071225 is about 1086.9169746673.

The spelling of 1284071225 in words is "one billion, two hundred eighty-four million, seventy-one thousand, two hundred twenty-five".