135555204425 has 12 divisors (see below), whose sum is σ = 168368153436. Its totient is φ = 108263712000.

The previous prime is 135555204409. The next prime is 135555204479. The reversal of 135555204425 is 524402555531.

It can be written as a sum of positive squares in 6 ways, for example, as 6624657664 + 128930546761 = 81392^2 + 359069^2 .

It is not a de Polignac number, because 135555204425 - 2⁴ = 135555204409 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, 4495964 + ... + 4526013.

It is an arithmetic number, because the mean of its divisors is an integer number (14030679453).

Almost surely, 2^135555204425 is an apocalyptic number.

It is an amenable number.

135555204425 is a deficient number, since it is larger than the sum of its proper divisors (32812949011).

135555204425 is an equidigital number, since it uses as much as digits as its factorization.

135555204425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022588 (or 9022583 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 41.

Adding to 135555204425 its reverse (524402555531), we get a palindrome (659957759956).

The spelling of 135555204425 in words is "one hundred thirty-five billion, five hundred fifty-five million, two hundred four thousand, four hundred twenty-five".