1225706827 has 4 divisors (see below), whose sum is σ = 1225965376. Its totient is φ = 1225448280.

The previous prime is 1225706813. The next prime is 1225706863. The reversal of 1225706827 is 7286075221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7286075221 = 33179 ⋅219599.

It is a cyclic number.

It is not a de Polignac number, because 1225706827 - 2²⁷ = 1091489099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225706827.

It is not an unprimeable number, because it can be changed into a prime (1225706897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122028 + ... + 131689.

It is an arithmetic number, because the mean of its divisors is an integer number (306491344).

Almost surely, 2^1225706827 is an apocalyptic number.

1225706827 is a deficient number, since it is larger than the sum of its proper divisors (258549).

1225706827 is an equidigital number, since it uses as much as digits as its factorization.

1225706827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258548.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1225706827 is about 35010.0960724189. The cubic root of 1225706827 is about 1070.1932358375.

The spelling of 1225706827 in words is "one billion, two hundred twenty-five million, seven hundred six thousand, eight hundred twenty-seven".