40125603 has 16 divisors (see below), whose sum is σ = 61883136. Its totient is φ = 22651680.

The previous prime is 40125599. The next prime is 40125619. The reversal of 40125603 is 30652104.

It is a happy number.

It is not a de Polignac number, because 40125603 - 2² = 40125599 is a prime.

It is a super-2 number, since 2×40125603² = 3220128032227218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 40125603.

It is not an unprimeable number, because it can be changed into a prime (40125623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9768 + ... + 13253.

It is an arithmetic number, because the mean of its divisors is an integer number (3867696).

Almost surely, 2^40125603 is an apocalyptic number.

40125603 is a deficient number, since it is larger than the sum of its proper divisors (21757533).

40125603 is a wasteful number, since it uses less digits than its factorization.

40125603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23114.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40125603 is about 6334.4773265045. The cubic root of 40125603 is about 342.3527788249.

Adding to 40125603 its reverse (30652104), we get a palindrome (70777707).

The spelling of 40125603 in words is "forty million, one hundred twenty-five thousand, six hundred three".