135104025 has 72 divisors (see below), whose sum is σ = 263212320. Its totient is φ = 60963840.

The previous prime is 135104023. The next prime is 135104059. The reversal of 135104025 is 520401531.

It is not a de Polignac number, because 135104025 - 2¹ = 135104023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 135103992 and 135104010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135104023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 356286 + ... + 356664.

Almost surely, 2^135104025 is an apocalyptic number.

135104025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135104025 is a deficient number, since it is larger than the sum of its proper divisors (128108295).

135104025 is a wasteful number, since it uses less digits than its factorization.

135104025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 135104025 is about 11623.4256998529. The cubic root of 135104025 is about 513.1245133204.

Adding to 135104025 its reverse (520401531), we get a palindrome (655505556).

The spelling of 135104025 in words is "one hundred thirty-five million, one hundred four thousand, twenty-five".