1225265655 has 8 divisors (see below), whose sum is σ = 1960425072. Its totient is φ = 653475008.

The previous prime is 1225265627. The next prime is 1225265659. The reversal of 1225265655 is 5565625221.

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

It is a cyclic number.

It is not a de Polignac number, because 1225265655 - 2⁷ = 1225265527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225265659) 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, 40842174 + ... + 40842203.

It is an arithmetic number, because the mean of its divisors is an integer number (245053134).

Almost surely, 2^1225265655 is an apocalyptic number.

1225265655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225265655 is a deficient number, since it is larger than the sum of its proper divisors (735159417).

1225265655 is an equidigital number, since it uses as much as digits as its factorization.

1225265655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81684385.

The product of its digits is 180000, while the sum is 39.

The square root of 1225265655 is about 35003.7948656999. The cubic root of 1225265655 is about 1070.0648212397.

The spelling of 1225265655 in words is "one billion, two hundred twenty-five million, two hundred sixty-five thousand, six hundred fifty-five".