135389525 has 6 divisors (see below), whose sum is σ = 167883042. Its totient is φ = 108311600.

The previous prime is 135389521. The next prime is 135389531. The reversal of 135389525 is 525983531.

It can be written as a sum of positive squares in 3 ways, for example, as 33258289 + 102131236 = 5767^2 + 10106^2 .

It is not a de Polignac number, because 135389525 - 2² = 135389521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135389521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2707766 + ... + 2707815.

It is an arithmetic number, because the mean of its divisors is an integer number (27980507).

Almost surely, 2^135389525 is an apocalyptic number.

It is an amenable number.

135389525 is a deficient number, since it is larger than the sum of its proper divisors (32493517).

135389525 is an equidigital number, since it uses as much as digits as its factorization.

135389525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415591 (or 5415586 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 135389525 is about 11635.7004516273. The cubic root of 135389525 is about 513.4857016163.

The spelling of 135389525 in words is "one hundred thirty-five million, three hundred eighty-nine thousand, five hundred twenty-five".