1143255525 has 48 divisors (see below), whose sum is σ = 2009121408. Its totient is φ = 571648000.

The previous prime is 1143255499. The next prime is 1143255539. The reversal of 1143255525 is 5255523411.

It is not a de Polignac number, because 1143255525 - 2¹⁹ = 1142731237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 356680 + ... + 359870.

It is an arithmetic number, because the mean of its divisors is an integer number (41856696).

Almost surely, 2^1143255525 is an apocalyptic number.

1143255525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143255525 is a deficient number, since it is larger than the sum of its proper divisors (865865883).

1143255525 is a wasteful number, since it uses less digits than its factorization.

1143255525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502 (or 3497 counting only the distinct ones).

The product of its digits is 30000, while the sum is 33.

The square root of 1143255525 is about 33812.0618271054. The cubic root of 1143255525 is about 1045.6373865406.

Adding to 1143255525 its reverse (5255523411), we get a palindrome (6398778936).

The spelling of 1143255525 in words is "one billion, one hundred forty-three million, two hundred fifty-five thousand, five hundred twenty-five".