135505430400425 has 12 divisors (see below), whose sum is σ = 168066578914716. Its totient is φ = 108378637728000.

The previous prime is 135505430400401. The next prime is 135505430400467. The reversal of 135505430400425 is 524004034505531.

It can be written as a sum of positive squares in 6 ways, for example, as 23693247440041 + 111812182960384 = 4867571^2 + 10574128^2 .

It is not a de Polignac number, because 135505430400425 - 2²⁸ = 135505161964969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642557276 + ... + 642768125.

It is an arithmetic number, because the mean of its divisors is an integer number (14005548242893).

Almost surely, 2^{135505430400425} is an apocalyptic number.

It is an amenable number.

135505430400425 is a deficient number, since it is larger than the sum of its proper divisors (32561148514291).

135505430400425 is a wasteful number, since it uses less digits than its factorization.

135505430400425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285329628 (or 1285329623 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 41.

Adding to 135505430400425 its reverse (524004034505531), we get a palindrome (659509464905956).

The spelling of 135505430400425 in words is "one hundred thirty-five trillion, five hundred five billion, four hundred thirty million, four hundred thousand, four hundred twenty-five".