20042243025 has 96 divisors (see below), whose sum is σ = 38874654720. Its totient is φ = 8920558080.

The previous prime is 20042243003. The next prime is 20042243027. The reversal of 20042243025 is 52034224002.

It is a happy number.

It is not a de Polignac number, because 20042243025 - 2¹⁰ = 20042242001 is a prime.

It is a super-2 number, since 2×20042243025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20042242986 and 20042243004.

It is not an unprimeable number, because it can be changed into a prime (20042243027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8103189 + ... + 8105661.

It is an arithmetic number, because the mean of its divisors is an integer number (404944320).

Almost surely, 2^20042243025 is an apocalyptic number.

20042243025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20042243025 is a deficient number, since it is larger than the sum of its proper divisors (18832411695).

20042243025 is a wasteful number, since it uses less digits than its factorization.

20042243025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895 (or 2890 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 20042243025 its reverse (52034224002), we get a palindrome (72076467027).

The spelling of 20042243025 in words is "twenty billion, forty-two million, two hundred forty-three thousand, twenty-five".