1225153655 has 8 divisors (see below), whose sum is σ = 1603837584. Its totient is φ = 891020800.

The previous prime is 1225153651. The next prime is 1225153669. The reversal of 1225153655 is 5563515221.

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

It is not a de Polignac number, because 1225153655 - 2² = 1225153651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225153651) 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, 11137706 + ... + 11137815.

It is an arithmetic number, because the mean of its divisors is an integer number (200479698).

Almost surely, 2^1225153655 is an apocalyptic number.

1225153655 is a deficient number, since it is larger than the sum of its proper divisors (378683929).

1225153655 is a wasteful number, since it uses less digits than its factorization.

1225153655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22275537.

The product of its digits is 45000, while the sum is 35.

The square root of 1225153655 is about 35002.1950025995. The cubic root of 1225153655 is about 1070.0322158175.

Adding to 1225153655 its reverse (5563515221), we get a palindrome (6788668876).

The spelling of 1225153655 in words is "one billion, two hundred twenty-five million, one hundred fifty-three thousand, six hundred fifty-five".