125231305 has 4 divisors (see below), whose sum is σ = 150277572. Its totient is φ = 100185040.

The previous prime is 125231287. The next prime is 125231317. The reversal of 125231305 is 503132521.

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 51322896 + 73908409 = 7164^2 + 8597^2 .

It is not a de Polignac number, because 125231305 - 2⁷ = 125231177 is a prime.

It is a Duffinian 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, 12523126 + ... + 12523135.

It is an arithmetic number, because the mean of its divisors is an integer number (37569393).

Almost surely, 2^125231305 is an apocalyptic number.

It is an amenable number.

125231305 is a deficient number, since it is larger than the sum of its proper divisors (25046267).

125231305 is an equidigital number, since it uses as much as digits as its factorization.

125231305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25046266.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 125231305 is about 11190.6793806274. The cubic root of 125231305 is about 500.3082166326.

Adding to 125231305 its reverse (503132521), we get a palindrome (628363826).

The spelling of 125231305 in words is "one hundred twenty-five million, two hundred thirty-one thousand, three hundred five".