125830405 has 4 divisors (see below), whose sum is σ = 150996492. Its totient is φ = 100664320.

The previous prime is 125830381. The next prime is 125830459. The reversal of 125830405 is 504038521.

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 21095649 + 104734756 = 4593^2 + 10234^2 .

It is not a de Polignac number, because 125830405 - 2¹⁷ = 125699333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12583036 + ... + 12583045.

It is an arithmetic number, because the mean of its divisors is an integer number (37749123).

Almost surely, 2^125830405 is an apocalyptic number.

It is an amenable number.

125830405 is a deficient number, since it is larger than the sum of its proper divisors (25166087).

125830405 is an equidigital number, since it uses as much as digits as its factorization.

125830405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25166086.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 125830405 is about 11217.4152548615. The cubic root of 125830405 is about 501.1047638625.

Adding to 125830405 its reverse (504038521), we get a palindrome (629868926).

The spelling of 125830405 in words is "one hundred twenty-five million, eight hundred thirty thousand, four hundred five".