125221037 has 2 divisors, whose sum is σ = 125221038. Its totient is φ = 125221036.

The previous prime is 125221009. The next prime is 125221051. The reversal of 125221037 is 730122521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63457156 + 61763881 = 7966^2 + 7859^2 .

It is a cyclic number.

It is not a de Polignac number, because 125221037 - 2¹² = 125216941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62610518 + 62610519.

It is an arithmetic number, because the mean of its divisors is an integer number (62610519).

Almost surely, 2^125221037 is an apocalyptic number.

It is an amenable number.

125221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

125221037 is an equidigital number, since it uses as much as digits as its factorization.

125221037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 125221037 is about 11190.2205965745. The cubic root of 125221037 is about 500.2945424554.

Adding to 125221037 its reverse (730122521), we get a palindrome (855343558).

The spelling of 125221037 in words is "one hundred twenty-five million, two hundred twenty-one thousand, thirty-seven".