125425789 has 2 divisors, whose sum is σ = 125425790. Its totient is φ = 125425788.

The previous prime is 125425787. The next prime is 125425843. The reversal of 125425789 is 987524521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114811225 + 10614564 = 10715^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 125425789 - 2¹ = 125425787 is a prime.

Together with 125425787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125425787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62712894 + 62712895.

It is an arithmetic number, because the mean of its divisors is an integer number (62712895).

Almost surely, 2^125425789 is an apocalyptic number.

It is an amenable number.

125425789 is a deficient number, since it is larger than the sum of its proper divisors (1).

125425789 is an equidigital number, since it uses as much as digits as its factorization.

125425789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 125425789 is about 11199.3655623879. The cubic root of 125425789 is about 500.5670752748.

The spelling of 125425789 in words is "one hundred twenty-five million, four hundred twenty-five thousand, seven hundred eighty-nine".