135252025 has 12 divisors (see below), whose sum is σ = 170878572. Its totient is φ = 106159040.

The previous prime is 135252011. The next prime is 135252031. The reversal of 135252025 is 520252531.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4309776 + 130942249 = 2076^2 + 11443^2 .

It is not a de Polignac number, because 135252025 - 2⁵ = 135251993 is a prime.

It is a super-2 number, since 2×135252025² = 36586220533201250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 49714 + ... + 52363.

It is an arithmetic number, because the mean of its divisors is an integer number (14239881).

Almost surely, 2^135252025 is an apocalyptic number.

It is an amenable number.

135252025 is a deficient number, since it is larger than the sum of its proper divisors (35626547).

135252025 is a wasteful number, since it uses less digits than its factorization.

135252025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102140 (or 102135 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 135252025 is about 11629.7904108372. The cubic root of 135252025 is about 513.3118127351.

The spelling of 135252025 in words is "one hundred thirty-five million, two hundred fifty-two thousand, twenty-five".