125205143 has 12 divisors (see below), whose sum is σ = 146177640. Its totient is φ = 106927632.

The previous prime is 125205137. The next prime is 125205167. The reversal of 125205143 is 341502521.

It is not a de Polignac number, because 125205143 - 2⁴ = 125205127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125205343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9353 + ... + 18381.

It is an arithmetic number, because the mean of its divisors is an integer number (12181470).

Almost surely, 2^125205143 is an apocalyptic number.

125205143 is a deficient number, since it is larger than the sum of its proper divisors (20972497).

125205143 is an equidigital number, since it uses as much as digits as its factorization.

125205143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9326 (or 9319 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 125205143 is about 11189.5104003705. The cubic root of 125205143 is about 500.2733745055.

Adding to 125205143 its reverse (341502521), we get a palindrome (466707664).

The spelling of 125205143 in words is "one hundred twenty-five million, two hundred five thousand, one hundred forty-three".