135444525 has 48 divisors (see below), whose sum is σ = 242984448. Its totient is φ = 66304000.

The previous prime is 135444523. The next prime is 135444557. The reversal of 135444525 is 525444531.

It is not a de Polignac number, because 135444525 - 2¹ = 135444523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135444523) 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 47 ways as a sum of consecutive naturals, for example, 50980 + ... + 53570.

It is an arithmetic number, because the mean of its divisors is an integer number (5062176).

Almost surely, 2^135444525 is an apocalyptic number.

135444525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135444525 is a deficient number, since it is larger than the sum of its proper divisors (107539923).

135444525 is a wasteful number, since it uses less digits than its factorization.

135444525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2657 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 135444525 is about 11638.0636275972. The cubic root of 135444525 is about 513.5552242036. Note that the first 3 decimals are identical.

The spelling of 135444525 in words is "one hundred thirty-five million, four hundred forty-four thousand, five hundred twenty-five".