1143620725 has 12 divisors (see below), whose sum is σ = 1527173956. Its totient is φ = 844519680.

The previous prime is 1143620717. The next prime is 1143620759. The reversal of 1143620725 is 5270263411.

It can be written as a sum of positive squares in 6 ways, for example, as 360012676 + 783608049 = 18974^2 + 27993^2 .

It is not a de Polignac number, because 1143620725 - 2³ = 1143620717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759092 + ... + 1759741.

Almost surely, 2^1143620725 is an apocalyptic number.

It is an amenable number.

1143620725 is a deficient number, since it is larger than the sum of its proper divisors (383553231).

1143620725 is a wasteful number, since it uses less digits than its factorization.

1143620725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518856 (or 3518851 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1143620725 is about 33817.4618355665. The cubic root of 1143620725 is about 1045.7487136853.

The spelling of 1143620725 in words is "one billion, one hundred forty-three million, six hundred twenty thousand, seven hundred twenty-five".