1225241320 has 32 divisors (see below), whose sum is σ = 2795627520. Its totient is φ = 483192640.

The previous prime is 1225241299. The next prime is 1225241321. The reversal of 1225241320 is 231425221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1225241291 and 1225241300.

It is not an unprimeable number, because it can be changed into a prime (1225241321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212872 + ... + 218551.

It is an arithmetic number, because the mean of its divisors is an integer number (87363360).

Almost surely, 2^1225241320 is an apocalyptic number.

1225241320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225241320 is an abundant number, since it is smaller than the sum of its proper divisors (1570386200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225241320 is a wasteful number, since it uses less digits than its factorization.

1225241320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431505 (or 431501 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1225241320 is about 35003.4472588058. The cubic root of 1225241320 is about 1070.0577370073.

Adding to 1225241320 its reverse (231425221), we get a palindrome (1456666541).

The spelling of 1225241320 in words is "one billion, two hundred twenty-five million, two hundred forty-one thousand, three hundred twenty".