42003630025 has 24 divisors (see below), whose sum is σ = 60114527424. Its totient is φ = 28517304000.

The previous prime is 42003629989. The next prime is 42003630037. The reversal of 42003630025 is 52003630024.

It is a happy number.

It is not a de Polignac number, because 42003630025 - 2¹¹ = 42003627977 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1170547 + ... + 1205896.

It is an arithmetic number, because the mean of its divisors is an integer number (2504771976).

Almost surely, 2^42003630025 is an apocalyptic number.

It is an amenable number.

42003630025 is a deficient number, since it is larger than the sum of its proper divisors (18110897399).

42003630025 is a wasteful number, since it uses less digits than its factorization.

42003630025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376561 (or 2376556 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Subtracting 42003630025 from its reverse (52003630024), we obtain a palindrome (9999999999).

The spelling of 42003630025 in words is "forty-two billion, three million, six hundred thirty thousand, twenty-five".