1155425155 has 8 divisors (see below), whose sum is σ = 1403215632. Its totient is φ = 913203168.

The previous prime is 1155425147. The next prime is 1155425177. The reversal of 1155425155 is 5515245511.

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 1155425155 - 2³ = 1155425147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155425155.

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, 1391664 + ... + 1392493.

It is an arithmetic number, because the mean of its divisors is an integer number (175401954).

Almost surely, 2^1155425155 is an apocalyptic number.

1155425155 is a deficient number, since it is larger than the sum of its proper divisors (247790477).

1155425155 is an equidigital number, since it uses as much as digits as its factorization.

1155425155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784245.

The product of its digits is 25000, while the sum is 34.

The square root of 1155425155 is about 33991.5453458651. The cubic root of 1155425155 is about 1049.3344701634.

The spelling of 1155425155 in words is "one billion, one hundred fifty-five million, four hundred twenty-five thousand, one hundred fifty-five".