125531411 has 4 divisors (see below), whose sum is σ = 125978424. Its totient is φ = 125084400.

The previous prime is 125531387. The next prime is 125531453. The reversal of 125531411 is 114135521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114135521 = 31 ⋅3681791.

It is a cyclic number.

It is not a de Polignac number, because 125531411 - 2¹⁰ = 125530387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125531011) 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, 223085 + ... + 223646.

It is an arithmetic number, because the mean of its divisors is an integer number (31494606).

Almost surely, 2^125531411 is an apocalyptic number.

125531411 is a deficient number, since it is larger than the sum of its proper divisors (447013).

125531411 is an equidigital number, since it uses as much as digits as its factorization.

125531411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447012.

The product of its digits is 600, while the sum is 23.

The square root of 125531411 is about 11204.0801050332. The cubic root of 125531411 is about 500.7075462842.

Adding to 125531411 its reverse (114135521), we get a palindrome (239666932).

The spelling of 125531411 in words is "one hundred twenty-five million, five hundred thirty-one thousand, four hundred eleven".