125135345 has 4 divisors (see below), whose sum is σ = 150162420. Its totient is φ = 100108272.

The previous prime is 125135333. The next prime is 125135347. The reversal of 125135345 is 543531521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543531521 = 13 ⋅41810117.

It can be written as a sum of positive squares in 2 ways, for example, as 63936016 + 61199329 = 7996^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 125135345 - 2⁸ = 125135089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125135347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12513530 + ... + 12513539.

It is an arithmetic number, because the mean of its divisors is an integer number (37540605).

Almost surely, 2^125135345 is an apocalyptic number.

It is an amenable number.

125135345 is a deficient number, since it is larger than the sum of its proper divisors (25027075).

125135345 is an equidigital number, since it uses as much as digits as its factorization.

125135345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25027074.

The product of its digits is 9000, while the sum is 29.

The square root of 125135345 is about 11186.3910623579. The cubic root of 125135345 is about 500.1803949075.

Adding to 125135345 its reverse (543531521), we get a palindrome (668666866).

The spelling of 125135345 in words is "one hundred twenty-five million, one hundred thirty-five thousand, three hundred forty-five".