12642422025 has 24 divisors (see below), whose sum is σ = 20909541664. Its totient is φ = 6740236800.

The previous prime is 12642421991. The next prime is 12642422047. The reversal of 12642422025 is 52022424621.

It is not a de Polignac number, because 12642422025 - 2¹² = 12642417929 is a prime.

It is a super-3 number, since 3×12642422025³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12642421983 and 12642422001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194457 + ... + 251193.

Almost surely, 2^12642422025 is an apocalyptic number.

12642422025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12642422025 is a deficient number, since it is larger than the sum of its proper divisors (8267119639).

12642422025 is a wasteful number, since it uses less digits than its factorization.

12642422025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59721 (or 59716 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 12642422025 its reverse (52022424621), we get a palindrome (64664846646).

The spelling of 12642422025 in words is "twelve billion, six hundred forty-two million, four hundred twenty-two thousand, twenty-five".