125631229 has 2 divisors, whose sum is σ = 125631230. Its totient is φ = 125631228.

The previous prime is 125631223. The next prime is 125631271. The reversal of 125631229 is 922136521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91642329 + 33988900 = 9573^2 + 5830^2 .

It is an emirp because it is prime and its reverse (922136521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125631229 - 2¹⁷ = 125500157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125631229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125631223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62815614 + 62815615.

It is an arithmetic number, because the mean of its divisors is an integer number (62815615).

Almost surely, 2^125631229 is an apocalyptic number.

It is an amenable number.

125631229 is a deficient number, since it is larger than the sum of its proper divisors (1).

125631229 is an equidigital number, since it uses as much as digits as its factorization.

125631229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 125631229 is about 11208.5337578115. The cubic root of 125631229 is about 500.8402259166.

The spelling of 125631229 in words is "one hundred twenty-five million, six hundred thirty-one thousand, two hundred twenty-nine".