125946221 has 2 divisors, whose sum is σ = 125946222. Its totient is φ = 125946220.

The previous prime is 125946199. The next prime is 125946241. The reversal of 125946221 is 122649521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122655625 + 3290596 = 11075^2 + 1814^2 .

It is an emirp because it is prime and its reverse (122649521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125946221 - 2⁶ = 125946157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125946241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62973110 + 62973111.

It is an arithmetic number, because the mean of its divisors is an integer number (62973111).

Almost surely, 2^125946221 is an apocalyptic number.

It is an amenable number.

125946221 is a deficient number, since it is larger than the sum of its proper divisors (1).

125946221 is an equidigital number, since it uses as much as digits as its factorization.

125946221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 125946221 is about 11222.5763976014. The cubic root of 125946221 is about 501.2584579100.

The spelling of 125946221 in words is "one hundred twenty-five million, nine hundred forty-six thousand, two hundred twenty-one".