10002565422 has 80 divisors (see below), whose sum is σ = 23070299472. Its totient is φ = 3236837760.

The previous prime is 10002565403. The next prime is 10002565453. The reversal of 10002565422 is 22456520001.

10002565422 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 2 + 5 + 654 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3121273 + ... + 3124475.

Almost surely, 2^10002565422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10002565422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11535149736).

10002565422 is an abundant number, since it is smaller than the sum of its proper divisors (13067734050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10002565422 is a wasteful number, since it uses less digits than its factorization.

10002565422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775 (or 3766 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 10002565422 in words is "ten billion, two million, five hundred sixty-five thousand, four hundred twenty-two".