125643053 has 2 divisors, whose sum is σ = 125643054. Its totient is φ = 125643052.

The previous prime is 125643013. The next prime is 125643059. The reversal of 125643053 is 350346521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84400969 + 41242084 = 9187^2 + 6422^2 .

It is a cyclic number.

It is not a de Polignac number, because 125643053 - 2¹² = 125638957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125643059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62821526 + 62821527.

It is an arithmetic number, because the mean of its divisors is an integer number (62821527).

Almost surely, 2^125643053 is an apocalyptic number.

It is an amenable number.

125643053 is a deficient number, since it is larger than the sum of its proper divisors (1).

125643053 is an equidigital number, since it uses as much as digits as its factorization.

125643053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 125643053 is about 11209.0612006537. The cubic root of 125643053 is about 500.8559379045.

Adding to 125643053 its reverse (350346521), we get a palindrome (475989574).

The spelling of 125643053 in words is "one hundred twenty-five million, six hundred forty-three thousand, fifty-three".