1143155525 has 12 divisors (see below), whose sum is σ = 1420346592. Its totient is φ = 912696240.

The previous prime is 1143155483. The next prime is 1143155527. The reversal of 1143155525 is 5255513411.

It is not a de Polignac number, because 1143155525 - 2¹⁰ = 1143154501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143155491 and 1143155500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143155527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32879 + ... + 58028.

It is an arithmetic number, because the mean of its divisors is an integer number (118362216).

Almost surely, 2^1143155525 is an apocalyptic number.

It is an amenable number.

1143155525 is a deficient number, since it is larger than the sum of its proper divisors (277191067).

1143155525 is an equidigital number, since it uses as much as digits as its factorization.

1143155525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91420 (or 91415 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 1143155525 is about 33810.5830325358. The cubic root of 1143155525 is about 1045.6068985219.

Adding to 1143155525 its reverse (5255513411), we get a palindrome (6398668936).

The spelling of 1143155525 in words is "one billion, one hundred forty-three million, one hundred fifty-five thousand, five hundred twenty-five".