1535135725 has 12 divisors (see below), whose sum is σ = 1939486356. Its totient is φ = 1204935680.

The previous prime is 1535135671. The next prime is 1535135747. The reversal of 1535135725 is 5275315351.

It can be written as a sum of positive squares in 6 ways, for example, as 113167044 + 1421968681 = 10638^2 + 37709^2 .

It is not a de Polignac number, because 1535135725 - 2²⁵ = 1501581293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577972 + ... + 580621.

It is an arithmetic number, because the mean of its divisors is an integer number (161623863).

Almost surely, 2^1535135725 is an apocalyptic number.

It is an amenable number.

1535135725 is a deficient number, since it is larger than the sum of its proper divisors (404350631).

1535135725 is a wasteful number, since it uses less digits than its factorization.

1535135725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158656 (or 1158651 counting only the distinct ones).

The product of its digits is 78750, while the sum is 37.

The square root of 1535135725 is about 39180.8081208134. The cubic root of 1535135725 is about 1153.5832093512.

It can be divided in two parts, 15351 and 35725, that added together give a square (51076 = 226²).

The spelling of 1535135725 in words is "one billion, five hundred thirty-five million, one hundred thirty-five thousand, seven hundred twenty-five".