20611225530 has 48 divisors (see below), whose sum is σ = 61244786304. Its totient is φ = 4711137120.

The previous prime is 20611225529. The next prime is 20611225567. The reversal of 20611225530 is 3552211602.

It is a happy number.

20611225530 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 122 + 5 + 530 = 666.

20611225530 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 20611225494 and 20611225503.

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, 16357486 + ... + 16358745.

It is an arithmetic number, because the mean of its divisors is an integer number (1275933048).

Almost surely, 2^20611225530 is an apocalyptic number.

20611225530 is an abundant number, since it is smaller than the sum of its proper divisors (40633560774).

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

20611225530 is a wasteful number, since it uses less digits than its factorization.

20611225530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32716251 (or 32716248 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 20611225530 in words is "twenty billion, six hundred eleven million, two hundred twenty-five thousand, five hundred thirty".