1155425143 has 8 divisors (see below), whose sum is σ = 1175564160. Its totient is φ = 1135304760.

The previous prime is 1155425101. The next prime is 1155425147. The reversal of 1155425143 is 3415245511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155425143 is a prime.

It is a super-2 number, since 2×1155425143² = 2670014522153140898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155425147) 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, 189996 + ... + 195982.

It is an arithmetic number, because the mean of its divisors is an integer number (146945520).

Almost surely, 2^1155425143 is an apocalyptic number.

1155425143 is a deficient number, since it is larger than the sum of its proper divisors (20139017).

1155425143 is an equidigital number, since it uses as much as digits as its factorization.

1155425143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317.

The product of its digits is 12000, while the sum is 31.

The square root of 1155425143 is about 33991.5451693506. The cubic root of 1155425143 is about 1049.3344665307.

The spelling of 1155425143 in words is "one billion, one hundred fifty-five million, four hundred twenty-five thousand, one hundred forty-three".