1225421368 has 8 divisors (see below), whose sum is σ = 2297665080. Its totient is φ = 612710680.

The previous prime is 1225421339. The next prime is 1225421369. The reversal of 1225421368 is 8631245221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225421369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76588828 + ... + 76588843.

It is an arithmetic number, because the mean of its divisors is an integer number (287208135).

Almost surely, 2^1225421368 is an apocalyptic number.

It is an amenable number.

1225421368 is a deficient number, since it is larger than the sum of its proper divisors (1072243712).

1225421368 is a wasteful number, since it uses less digits than its factorization.

1225421368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153177677 (or 153177673 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 1225421368 is about 35006.0190253048. The cubic root of 1225421368 is about 1070.1101490821.

Adding to 1225421368 its reverse (8631245221), we get a palindrome (9856666589).

The spelling of 1225421368 in words is "one billion, two hundred twenty-five million, four hundred twenty-one thousand, three hundred sixty-eight".