125540135 has 32 divisors (see below), whose sum is σ = 176750592. Its totient is φ = 83825280.

The previous prime is 125540119. The next prime is 125540137. The reversal of 125540135 is 531045521.

It is not a de Polignac number, because 125540135 - 2⁴ = 125540119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125540137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270914 + ... + 271376.

It is an arithmetic number, because the mean of its divisors is an integer number (5523456).

Almost surely, 2^125540135 is an apocalyptic number.

125540135 is a deficient number, since it is larger than the sum of its proper divisors (51210457).

125540135 is a wasteful number, since it uses less digits than its factorization.

125540135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663.

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

The square root of 125540135 is about 11204.4694207267. The cubic root of 125540135 is about 500.7191451646.

Adding to 125540135 its reverse (531045521), we get a palindrome (656585656).

The spelling of 125540135 in words is "one hundred twenty-five million, five hundred forty thousand, one hundred thirty-five".