30025426638 has 16 divisors (see below), whose sum is σ = 60066231120. Its totient is φ = 10005912576.

The previous prime is 30025426621. The next prime is 30025426663. The reversal of 30025426638 is 83662452003.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30025426596 and 30025426605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615283 + ... + 662286.

It is an arithmetic number, because the mean of its divisors is an integer number (3754139445).

Almost surely, 2^30025426638 is an apocalyptic number.

30025426638 is an abundant number, since it is smaller than the sum of its proper divisors (30040804482).

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

30025426638 is a wasteful number, since it uses less digits than its factorization.

30025426638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281491.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 30025426638 in words is "thirty billion, twenty-five million, four hundred twenty-six thousand, six hundred thirty-eight".