40000442025 has 12 divisors (see below), whose sum is σ = 66134064272. Its totient is φ = 21333569040.

The previous prime is 40000441967. The next prime is 40000442029. The reversal of 40000442025 is 52024400004.

It is not a de Polignac number, because 40000442025 - 2¹⁰ = 40000441001 is a prime.

It is a super-2 number, since 2×40000442025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40000441992 and 40000442010.

It is not an unprimeable number, because it can be changed into a prime (40000442029) 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, 266669539 + ... + 266669688.

Almost surely, 2^40000442025 is an apocalyptic number.

It is an amenable number.

40000442025 is a deficient number, since it is larger than the sum of its proper divisors (26133622247).

40000442025 is a wasteful number, since it uses less digits than its factorization.

40000442025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533339240 (or 533339235 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 40000442025 its reverse (52024400004), we get a palindrome (92024842029).

The spelling of 40000442025 in words is "forty billion, four hundred forty-two thousand, twenty-five".