1225022642 has 8 divisors (see below), whose sum is σ = 1917426816. Its totient is φ = 585880372.

The previous prime is 1225022609. The next prime is 1225022651. The reversal of 1225022642 is 2462205221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13315418 + ... + 13315509.

It is an arithmetic number, because the mean of its divisors is an integer number (239678352).

Almost surely, 2^1225022642 is an apocalyptic number.

1225022642 is a deficient number, since it is larger than the sum of its proper divisors (692404174).

1225022642 is a wasteful number, since it uses less digits than its factorization.

1225022642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630952.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1225022642 is about 35000.3234556482. The cubic root of 1225022642 is about 1069.9940728120.

Adding to 1225022642 its reverse (2462205221), we get a palindrome (3687227863).

The spelling of 1225022642 in words is "one billion, two hundred twenty-five million, twenty-two thousand, six hundred forty-two".