125433689 has 4 divisors (see below), whose sum is σ = 125456100. Its totient is φ = 125411280.

The previous prime is 125433677. The next prime is 125433691. The reversal of 125433689 is 986334521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986334521 = 21523 ⋅45827.

It can be written as a sum of positive squares in 2 ways, for example, as 92313664 + 33120025 = 9608^2 + 5755^2 .

It is a cyclic number.

It is not a de Polignac number, because 125433689 - 2⁸ = 125433433 is a prime.

It is a super-2 number, since 2×125433689² = 31467220672297442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125433619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087 + ... + 16635.

It is an arithmetic number, because the mean of its divisors is an integer number (31364025).

Almost surely, 2^125433689 is an apocalyptic number.

It is an amenable number.

125433689 is a deficient number, since it is larger than the sum of its proper divisors (22411).

125433689 is a wasteful number, since it uses less digits than its factorization.

125433689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22410.

The product of its digits is 155520, while the sum is 41.

The square root of 125433689 is about 11199.7182553848. The cubic root of 125433689 is about 500.5775845353.

It can be divided in two parts, 1254 and 33689, that added together give a palindrome (34943).

The spelling of 125433689 in words is "one hundred twenty-five million, four hundred thirty-three thousand, six hundred eighty-nine".