1222209425 has 12 divisors (see below), whose sum is σ = 1550786160. Its totient is φ = 955027920.

The previous prime is 1222209421. The next prime is 1222209431. The reversal of 1222209425 is 5249022221.

It is not a de Polignac number, because 1222209425 - 2² = 1222209421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222209421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567395 + ... + 569544.

It is an arithmetic number, because the mean of its divisors is an integer number (129232180).

Almost surely, 2^1222209425 is an apocalyptic number.

It is an amenable number.

1222209425 is a deficient number, since it is larger than the sum of its proper divisors (328576735).

1222209425 is a wasteful number, since it uses less digits than its factorization.

1222209425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136992 (or 1136987 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1222209425 is about 34960.1119134364. Note that the first 3 decimals coincide. The cubic root of 1222209425 is about 1069.1743783920.

The spelling of 1222209425 in words is "one billion, two hundred twenty-two million, two hundred nine thousand, four hundred twenty-five".