1256222014 has 4 divisors (see below), whose sum is σ = 1884333024. Its totient is φ = 628111006.

The previous prime is 1256221991. The next prime is 1256222053. The reversal of 1256222014 is 4102226521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4102226521 = 19 ⋅215906659.

It is a self number, because there is not a number n which added to its sum of digits gives 1256222014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314055502 + ... + 314055505.

It is an arithmetic number, because the mean of its divisors is an integer number (471083256).

Almost surely, 2^1256222014 is an apocalyptic number.

1256222014 is a deficient number, since it is larger than the sum of its proper divisors (628111010).

1256222014 is an equidigital number, since it uses as much as digits as its factorization.

1256222014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628111009.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1256222014 is about 35443.2223986477. Note that the first 3 decimals coincide. The cubic root of 1256222014 is about 1079.0017106969.

Adding to 1256222014 its reverse (4102226521), we get a palindrome (5358448535).

The spelling of 1256222014 in words is "one billion, two hundred fifty-six million, two hundred twenty-two thousand, fourteen".