125405135 has 16 divisors (see below), whose sum is σ = 157235040. Its totient is φ = 95894400.

The previous prime is 125405129. The next prime is 125405171. The reversal of 125405135 is 531504521.

It is a de Polignac number, because none of the positive numbers 2^k-125405135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10364 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (9827190).

Almost surely, 2^125405135 is an apocalyptic number.

125405135 is a deficient number, since it is larger than the sum of its proper divisors (31829905).

125405135 is a wasteful number, since it uses less digits than its factorization.

125405135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 125405135 is about 11198.4434186185. The cubic root of 125405135 is about 500.5395974597.

Adding to 125405135 its reverse (531504521), we get a palindrome (656909656).

The spelling of 125405135 in words is "one hundred twenty-five million, four hundred five thousand, one hundred thirty-five".