42421022025 has 12 divisors (see below), whose sum is σ = 70136089872. Its totient is φ = 22624545040.

The previous prime is 42421021999. The next prime is 42421022041. The reversal of 42421022025 is 52022012424.

It is not a de Polignac number, because 42421022025 - 2¹⁰ = 42421021001 is a prime.

It is a super-3 number, since 3×42421022025³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42421021986 and 42421022004.

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 11 ways as a sum of consecutive naturals, for example, 282806739 + ... + 282806888.

It is an arithmetic number, because the mean of its divisors is an integer number (5844674156).

Almost surely, 2^42421022025 is an apocalyptic number.

It is an amenable number.

42421022025 is a deficient number, since it is larger than the sum of its proper divisors (27715067847).

42421022025 is a wasteful number, since it uses less digits than its factorization.

42421022025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565613640 (or 565613635 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 42421022025 its reverse (52022012424), we get a palindrome (94443034449).

The spelling of 42421022025 in words is "forty-two billion, four hundred twenty-one million, twenty-two thousand, twenty-five".