125520003 has 32 divisors (see below), whose sum is σ = 213073920. Its totient is φ = 71539200.

The previous prime is 125519981. The next prime is 125520007. The reversal of 125520003 is 300025521.

It is a happy number.

It is not a de Polignac number, because 125520003 - 2¹⁰ = 125518979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125520007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108478 + ... + 109628.

It is an arithmetic number, because the mean of its divisors is an integer number (6658560).

Almost surely, 2^125520003 is an apocalyptic number.

125520003 is a deficient number, since it is larger than the sum of its proper divisors (87553917).

125520003 is a wasteful number, since it uses less digits than its factorization.

125520003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 125520003 is about 11203.5709932146. The cubic root of 125520003 is about 500.6923781159.

Adding to 125520003 its reverse (300025521), we get a palindrome (425545524).

The spelling of 125520003 in words is "one hundred twenty-five million, five hundred twenty thousand, three".