125453221 has 2 divisors, whose sum is σ = 125453222. Its totient is φ = 125453220.

The previous prime is 125453203. The next prime is 125453291. The reversal of 125453221 is 122354521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97732996 + 27720225 = 9886^2 + 5265^2 .

It is a cyclic number.

It is not a de Polignac number, because 125453221 - 2⁵ = 125453189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125453291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62726610 + 62726611.

It is an arithmetic number, because the mean of its divisors is an integer number (62726611).

Almost surely, 2^125453221 is an apocalyptic number.

It is an amenable number.

125453221 is a deficient number, since it is larger than the sum of its proper divisors (1).

125453221 is an equidigital number, since it uses as much as digits as its factorization.

125453221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 125453221 is about 11200.5902076632. The cubic root of 125453221 is about 500.6035657902.

The spelling of 125453221 in words is "one hundred twenty-five million, four hundred fifty-three thousand, two hundred twenty-one".