1143023425 has 12 divisors (see below), whose sum is σ = 1455656956. Its totient is φ = 889704000.

The previous prime is 1143023411. The next prime is 1143023437. The reversal of 1143023425 is 5243203411.

It can be written as a sum of positive squares in 6 ways, for example, as 13256881 + 1129766544 = 3641^2 + 33612^2 .

It is not a de Polignac number, because 1143023425 - 2⁹ = 1143022913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143023425.

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, 616926 + ... + 618775.

Almost surely, 2^1143023425 is an apocalyptic number.

It is an amenable number.

1143023425 is a deficient number, since it is larger than the sum of its proper divisors (312633531).

1143023425 is a wasteful number, since it uses less digits than its factorization.

1143023425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235748 (or 1235743 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1143023425 is about 33808.6294457495. The cubic root of 1143023425 is about 1045.5666211233.

Adding to 1143023425 its reverse (5243203411), we get a palindrome (6386226836).

The spelling of 1143023425 in words is "one billion, one hundred forty-three million, twenty-three thousand, four hundred twenty-five".