125504431 has 8 divisors (see below), whose sum is σ = 139819680. Its totient is φ = 111855072.

The previous prime is 125504417. The next prime is 125504437. The reversal of 125504431 is 134405521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125504431 - 2⁷ = 125504303 is a prime.

It is a super-2 number, since 2×125504431² = 31502724401267522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125504396 and 125504405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125504437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166075 + ... + 166828.

It is an arithmetic number, because the mean of its divisors is an integer number (17477460).

Almost surely, 2^125504431 is an apocalyptic number.

125504431 is a deficient number, since it is larger than the sum of its proper divisors (14315249).

125504431 is a wasteful number, since it uses less digits than its factorization.

125504431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332945.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 125504431 is about 11202.8760146669. The cubic root of 125504431 is about 500.6716719762.

Adding to 125504431 its reverse (134405521), we get a palindrome (259909952).

The spelling of 125504431 in words is "one hundred twenty-five million, five hundred four thousand, four hundred thirty-one".