135521414350225 has 48 divisors (see below), whose sum is σ = 170717979100032. Its totient is φ = 106700307816960.

The previous prime is 135521414350199. The next prime is 135521414350271. The reversal of 135521414350225 is 522053414125531.

It is not a de Polignac number, because 135521414350225 - 2¹⁹ = 135521413825937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1702212519 + ... + 1702292131.

It is an arithmetic number, because the mean of its divisors is an integer number (3556624564584).

Almost surely, 2^{135521414350225} is an apocalyptic number.

It is an amenable number.

135521414350225 is a deficient number, since it is larger than the sum of its proper divisors (35196564749807).

135521414350225 is a wasteful number, since it uses less digits than its factorization.

135521414350225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81706 (or 81701 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

Adding to 135521414350225 its reverse (522053414125531), we get a palindrome (657574828475756).

The spelling of 135521414350225 in words is "one hundred thirty-five trillion, five hundred twenty-one billion, four hundred fourteen million, three hundred fifty thousand, two hundred twenty-five".