1535231125 has 32 divisors (see below), whose sum is σ = 1973069280. Its totient is φ = 1192089600.

The previous prime is 1535231111. The next prime is 1535231143. The reversal of 1535231125 is 5211325351.

It can be written as a sum of positive squares in 16 ways, for example, as 1159879249 + 375351876 = 34057^2 + 19374^2 .

It is not a de Polignac number, because 1535231125 - 2²⁹ = 998360213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1535231093 and 1535231102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 641431 + ... + 643819.

It is an arithmetic number, because the mean of its divisors is an integer number (61658415).

Almost surely, 2^1535231125 is an apocalyptic number.

It is an amenable number.

1535231125 is a deficient number, since it is larger than the sum of its proper divisors (437838155).

1535231125 is an equidigital number, since it uses as much as digits as its factorization.

1535231125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554 (or 2544 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 1535231125 is about 39182.0255346760. The cubic root of 1535231125 is about 1153.6071050795.

Adding to 1535231125 its reverse (5211325351), we get a palindrome (6746556476).

The spelling of 1535231125 in words is "one billion, five hundred thirty-five million, two hundred thirty-one thousand, one hundred twenty-five".