125404133 has 4 divisors (see below), whose sum is σ = 125447820. Its totient is φ = 125360448.

The previous prime is 125404129. The next prime is 125404163. The reversal of 125404133 is 331404521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119749249 + 5654884 = 10943^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 125404133 - 2² = 125404129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125404099 and 125404108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17210 + ... + 23387.

It is an arithmetic number, because the mean of its divisors is an integer number (31361955).

Almost surely, 2^125404133 is an apocalyptic number.

It is an amenable number.

125404133 is a deficient number, since it is larger than the sum of its proper divisors (43687).

125404133 is an equidigital number, since it uses as much as digits as its factorization.

125404133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43686.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 125404133 is about 11198.3986801685. The cubic root of 125404133 is about 500.5382643351.

Adding to 125404133 its reverse (331404521), we get a palindrome (456808654).

The spelling of 125404133 in words is "one hundred twenty-five million, four hundred four thousand, one hundred thirty-three".