135125025 has 24 divisors (see below), whose sum is σ = 255322944. Its totient is φ = 61771200.

The previous prime is 135125021. The next prime is 135125041. The reversal of 135125025 is 520521531.

It is a happy number.

It is not a de Polignac number, because 135125025 - 2² = 135125021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135124986 and 135125004.

It is not an unprimeable number, because it can be changed into a prime (135125021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128166 + ... + 129215.

It is an arithmetic number, because the mean of its divisors is an integer number (10638456).

Almost surely, 2^135125025 is an apocalyptic number.

135125025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135125025 is a deficient number, since it is larger than the sum of its proper divisors (120197919).

135125025 is a wasteful number, since it uses less digits than its factorization.

135125025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257401 (or 257396 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 135125025 is about 11624.3290128936. The cubic root of 135125025 is about 513.1510979134.

Adding to 135125025 its reverse (520521531), we get a palindrome (655646556).

The spelling of 135125025 in words is "one hundred thirty-five million, one hundred twenty-five thousand, twenty-five".