125531003 has 12 divisors (see below), whose sum is σ = 136345248. Its totient is φ = 115521120.

The previous prime is 125530969. The next prime is 125531011. The reversal of 125531003 is 300135521.

It is not a de Polignac number, because 125531003 - 2⁶ = 125530939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125531093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66158 + ... + 68028.

It is an arithmetic number, because the mean of its divisors is an integer number (11362104).

Almost surely, 2^125531003 is an apocalyptic number.

125531003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125531003 is a deficient number, since it is larger than the sum of its proper divisors (10814245).

125531003 is a wasteful number, since it uses less digits than its factorization.

125531003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 125531003 is about 11204.0618973656. The cubic root of 125531003 is about 500.7070038200.

Adding to 125531003 its reverse (300135521), we get a palindrome (425666524).

The spelling of 125531003 in words is "one hundred twenty-five million, five hundred thirty-one thousand, three".