125620321 has 2 divisors, whose sum is σ = 125620322. Its totient is φ = 125620320.

The previous prime is 125620307. The next prime is 125620337. The reversal of 125620321 is 123026521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82901025 + 42719296 = 9105^2 + 6536^2 .

It is a cyclic number.

It is not a de Polignac number, because 125620321 - 2⁷ = 125620193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125620292 and 125620301.

It is not a weakly prime, because it can be changed into another prime (125620301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62810160 + 62810161.

It is an arithmetic number, because the mean of its divisors is an integer number (62810161).

Almost surely, 2^125620321 is an apocalyptic number.

It is an amenable number.

125620321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125620321 is an equidigital number, since it uses as much as digits as its factorization.

125620321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 125620321 is about 11208.0471537195. The cubic root of 125620321 is about 500.8257302551.

Adding to 125620321 its reverse (123026521), we get a palindrome (248646842).

The spelling of 125620321 in words is "one hundred twenty-five million, six hundred twenty thousand, three hundred twenty-one".