40003442125 has 8 divisors (see below), whose sum is σ = 49924295928. Its totient is φ = 32002753600.

The previous prime is 40003442123. The next prime is 40003442177. The reversal of 40003442125 is 52124430004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12132141316 + 27871300809 = 110146^2 + 166947^2 .

It is not a de Polignac number, because 40003442125 - 2¹ = 40003442123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40003442125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003442123) 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, 160013644 + ... + 160013893.

It is an arithmetic number, because the mean of its divisors is an integer number (6240536991).

Almost surely, 2^40003442125 is an apocalyptic number.

It is an amenable number.

40003442125 is a deficient number, since it is larger than the sum of its proper divisors (9920853803).

40003442125 is an equidigital number, since it uses as much as digits as its factorization.

40003442125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320027552 (or 320027542 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 40003442125 its reverse (52124430004), we get a palindrome (92127872129).

The spelling of 40003442125 in words is "forty billion, three million, four hundred forty-two thousand, one hundred twenty-five".