135005025 has 12 divisors (see below), whose sum is σ = 223208432. Its totient is φ = 72002640.

The previous prime is 135005021. The next prime is 135005053. The reversal of 135005025 is 520500531.

It is not a de Polignac number, because 135005025 - 2² = 135005021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135004992 and 135005010.

It is not an unprimeable number, because it can be changed into a prime (135005021) 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, 899959 + ... + 900108.

Almost surely, 2^135005025 is an apocalyptic number.

135005025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135005025 is a deficient number, since it is larger than the sum of its proper divisors (88203407).

135005025 is a wasteful number, since it uses less digits than its factorization.

135005025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800080 (or 1800075 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 135005025 is about 11619.1662781802. The cubic root of 135005025 is about 512.9991488345. Note that the first 3 decimals are identical.

Adding to 135005025 its reverse (520500531), we get a palindrome (655505556).

The spelling of 135005025 in words is "one hundred thirty-five million, five thousand, twenty-five".