135125375125 has 32 divisors (see below), whose sum is σ = 181657213920. Its totient is φ = 99758131200.

The previous prime is 135125375123. The next prime is 135125375171. The reversal of 135125375125 is 521573521531.

It can be written as a sum of positive squares in 16 ways, for example, as 133150550404 + 1974824721 = 364898^2 + 44439^2 .

It is not a de Polignac number, because 135125375125 - 2¹ = 135125375123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135125375123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7682341 + ... + 7699909.

It is an arithmetic number, because the mean of its divisors is an integer number (5676787935).

Almost surely, 2^135125375125 is an apocalyptic number.

It is an amenable number.

135125375125 is a deficient number, since it is larger than the sum of its proper divisors (46531838795).

135125375125 is a wasteful number, since it uses less digits than its factorization.

135125375125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330 (or 22320 counting only the distinct ones).

The product of its digits is 157500, while the sum is 40.

Adding to 135125375125 its reverse (521573521531), we get a palindrome (656698896656).

The spelling of 135125375125 in words is "one hundred thirty-five billion, one hundred twenty-five million, three hundred seventy-five thousand, one hundred twenty-five".