1225413552 has 40 divisors (see below), whose sum is σ = 3453439680. Its totient is φ = 371337280.

The previous prime is 1225413529. The next prime is 1225413571. The reversal of 1225413552 is 2553145221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159902 + ... + 1160957.

It is an arithmetic number, because the mean of its divisors is an integer number (86335992).

Almost surely, 2^1225413552 is an apocalyptic number.

1225413552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225413552 is an abundant number, since it is smaller than the sum of its proper divisors (2228026128).

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

1225413552 is a wasteful number, since it uses less digits than its factorization.

1225413552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320881 (or 2320875 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 1225413552 is about 35005.9073871825. The cubic root of 1225413552 is about 1070.1078739467.

Adding to 1225413552 its reverse (2553145221), we get a palindrome (3778558773).

The spelling of 1225413552 in words is "one billion, two hundred twenty-five million, four hundred thirteen thousand, five hundred fifty-two".