1225413553 has 8 divisors (see below), whose sum is σ = 1508201408. Its totient is φ = 969557904.

The previous prime is 1225413529. The next prime is 1225413571. The reversal of 1225413553 is 3553145221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225413553 - 2¹⁷ = 1225282481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225413503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6732951 + ... + 6733132.

It is an arithmetic number, because the mean of its divisors is an integer number (188525176).

Almost surely, 2^1225413553 is an apocalyptic number.

1225413553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1225413553 is a deficient number, since it is larger than the sum of its proper divisors (282787855).

1225413553 is a wasteful number, since it uses less digits than its factorization.

1225413553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13466103.

The product of its digits is 18000, while the sum is 31.

The square root of 1225413553 is about 35005.9074014658. The cubic root of 1225413553 is about 1070.1078742378.

Adding to 1225413553 its reverse (3553145221), we get a palindrome (4778558774).

The spelling of 1225413553 in words is "one billion, two hundred twenty-five million, four hundred thirteen thousand, five hundred fifty-three".