125656829 has 2 divisors, whose sum is σ = 125656830. Its totient is φ = 125656828.

The previous prime is 125656819. The next prime is 125656837. The reversal of 125656829 is 928656521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104080804 + 21576025 = 10202^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 125656829 - 2²⁴ = 108879613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125656829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125656819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62828414 + 62828415.

It is an arithmetic number, because the mean of its divisors is an integer number (62828415).

Almost surely, 2^125656829 is an apocalyptic number.

It is an amenable number.

125656829 is a deficient number, since it is larger than the sum of its proper divisors (1).

125656829 is an equidigital number, since it uses as much as digits as its factorization.

125656829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 44.

The square root of 125656829 is about 11209.6756866557. The cubic root of 125656829 is about 500.8742425092.

It can be divided in two parts, 1256 and 56829, that added together give a palindrome (58085).

The spelling of 125656829 in words is "one hundred twenty-five million, six hundred fifty-six thousand, eight hundred twenty-nine".