125425429 has 2 divisors, whose sum is σ = 125425430. Its totient is φ = 125425428.

The previous prime is 125425427. The next prime is 125425451. The reversal of 125425429 is 924524521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124211025 + 1214404 = 11145^2 + 1102^2 .

It is an emirp because it is prime and its reverse (924524521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125425429 - 2¹ = 125425427 is a prime.

Together with 125425427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 125425394 and 125425403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125425423) 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, 62712714 + 62712715.

It is an arithmetic number, because the mean of its divisors is an integer number (62712715).

Almost surely, 2^125425429 is an apocalyptic number.

It is an amenable number.

125425429 is a deficient number, since it is larger than the sum of its proper divisors (1).

125425429 is an equidigital number, since it uses as much as digits as its factorization.

125425429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 125425429 is about 11199.3494900374. The cubic root of 125425429 is about 500.5665963613.

It can be divided in two parts, 12542 and 5429, that added together give a palindrome (17971).

The spelling of 125425429 in words is "one hundred twenty-five million, four hundred twenty-five thousand, four hundred twenty-nine".