1143827725 has 12 divisors (see below), whose sum is σ = 1418832180. Its totient is φ = 914748800.

The previous prime is 1143827723. The next prime is 1143827761. The reversal of 1143827725 is 5277283411.

It can be written as a sum of positive squares in 6 ways, for example, as 160503561 + 983324164 = 12669^2 + 31358^2 .

It is not a de Polignac number, because 1143827725 - 2¹ = 1143827723 is a prime.

Its product of digits (94080) is a multiple of the sum of its prime factors (15680).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143827723) 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, 91131 + ... + 102919.

It is an arithmetic number, because the mean of its divisors is an integer number (118236015).

Almost surely, 2^1143827725 is an apocalyptic number.

It is an amenable number.

1143827725 is a deficient number, since it is larger than the sum of its proper divisors (275004455).

1143827725 is a wasteful number, since it uses less digits than its factorization.

1143827725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680 (or 15675 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 1143827725 is about 33820.5222461156. The cubic root of 1143827725 is about 1045.8118048016.

The spelling of 1143827725 in words is "one billion, one hundred forty-three million, eight hundred twenty-seven thousand, seven hundred twenty-five".