1225353552 has 40 divisors (see below), whose sum is σ = 3242709120. Its totient is φ = 398488320.

The previous prime is 1225353533. The next prime is 1225353583. The reversal of 1225353552 is 2553535221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309352 + ... + 313287.

It is an arithmetic number, because the mean of its divisors is an integer number (81067728).

Almost surely, 2^1225353552 is an apocalyptic number.

1225353552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225353552 is an abundant number, since it is smaller than the sum of its proper divisors (2017355568).

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

1225353552 is a wasteful number, since it uses less digits than its factorization.

1225353552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622691 (or 622685 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 1225353552 is about 35005.0503784811. The cubic root of 1225353552 is about 1070.0904084088.

Adding to 1225353552 its reverse (2553535221), we get a palindrome (3778888773).

The spelling of 1225353552 in words is "one billion, two hundred twenty-five million, three hundred fifty-three thousand, five hundred fifty-two".