135435521055225 has 96 divisors (see below), whose sum is σ = 233318513643520. Its totient is φ = 69247065888000.

The previous prime is 135435521055173. The next prime is 135435521055229. The reversal of 135435521055225 is 522550125534531.

It is not a de Polignac number, because 135435521055225 - 2⁸ = 135435521054969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135435521055229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 120262806 + ... + 121383744.

Almost surely, 2^{135435521055225} is an apocalyptic number.

135435521055225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135435521055225 is a deficient number, since it is larger than the sum of its proper divisors (97882992588295).

135435521055225 is a wasteful number, since it uses less digits than its factorization.

135435521055225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121471 (or 1121466 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 48.

Adding to 135435521055225 its reverse (522550125534531), we get a palindrome (657985646589756).

The spelling of 135435521055225 in words is "one hundred thirty-five trillion, four hundred thirty-five billion, five hundred twenty-one million, fifty-five thousand, two hundred twenty-five".