21425133032 has 16 divisors (see below), whose sum is σ = 40853008800. Its totient is φ = 10530997360.

The previous prime is 21425133019. The next prime is 21425133043. The reversal of 21425133032 is 23033152412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21425132992 and 21425133010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22695644 + ... + 22696587.

It is an arithmetic number, because the mean of its divisors is an integer number (2553313050).

Almost surely, 2^21425133032 is an apocalyptic number.

It is an amenable number.

21425133032 is a deficient number, since it is larger than the sum of its proper divisors (19427875768).

21425133032 is a wasteful number, since it uses less digits than its factorization.

21425133032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45392296 (or 45392292 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 21425133032 its reverse (23033152412), we get a palindrome (44458285444).

The spelling of 21425133032 in words is "twenty-one billion, four hundred twenty-five million, one hundred thirty-three thousand, thirty-two".