135404425 has 12 divisors (see below), whose sum is σ = 180817420. Its totient is φ = 99990720.

The previous prime is 135404419. The next prime is 135404429. The reversal of 135404425 is 524404531.

It can be written as a sum of positive squares in 6 ways, for example, as 45306361 + 90098064 = 6731^2 + 9492^2 .

It is not a de Polignac number, because 135404425 - 2¹⁵ = 135371657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135404393 and 135404402.

It is not an unprimeable number, because it can be changed into a prime (135404429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207990 + ... + 208639.

Almost surely, 2^135404425 is an apocalyptic number.

It is an amenable number.

135404425 is a deficient number, since it is larger than the sum of its proper divisors (45412995).

135404425 is a wasteful number, since it uses less digits than its factorization.

135404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416652 (or 416647 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 135404425 is about 11636.3407048780. The cubic root of 135404425 is about 513.5045377764.

Adding to 135404425 its reverse (524404531), we get a palindrome (659808956).

The spelling of 135404425 in words is "one hundred thirty-five million, four hundred four thousand, four hundred twenty-five".