135025131 has 16 divisors (see below), whose sum is σ = 187068960. Its totient is φ = 86526720.

The previous prime is 135025129. The next prime is 135025139. The reversal of 135025131 is 131520531.

It is not a de Polignac number, because 135025131 - 2¹ = 135025129 is a prime.

It is a super-2 number, since 2×135025131² = 36463572003134322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135025098 and 135025107.

It is not an unprimeable number, because it can be changed into a prime (135025139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16941 + ... + 23601.

It is an arithmetic number, because the mean of its divisors is an integer number (11691810).

Almost surely, 2^135025131 is an apocalyptic number.

135025131 is a deficient number, since it is larger than the sum of its proper divisors (52043829).

135025131 is a wasteful number, since it uses less digits than its factorization.

135025131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 135025131 is about 11620.0314543464. The cubic root of 135025131 is about 513.0246141802.

Adding to 135025131 its reverse (131520531), we get a palindrome (266545662).

The spelling of 135025131 in words is "one hundred thirty-five million, twenty-five thousand, one hundred thirty-one".