125531303 has 4 divisors (see below), whose sum is σ = 125772768. Its totient is φ = 125289840.

The previous prime is 125531279. The next prime is 125531321. The reversal of 125531303 is 303135521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125531303 - 2²⁰ = 124482727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125531333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119951 + ... + 120992.

It is an arithmetic number, because the mean of its divisors is an integer number (31443192).

Almost surely, 2^125531303 is an apocalyptic number.

125531303 is a deficient number, since it is larger than the sum of its proper divisors (241465).

125531303 is an equidigital number, since it uses as much as digits as its factorization.

125531303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241464.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 125531303 is about 11204.0752853593. The cubic root of 125531303 is about 500.7074026909.

Adding to 125531303 its reverse (303135521), we get a palindrome (428666824).

The spelling of 125531303 in words is "one hundred twenty-five million, five hundred thirty-one thousand, three hundred three".