20653225460 has 48 divisors (see below), whose sum is σ = 49641185664. Its totient is φ = 7070613888.

The previous prime is 20653225459. The next prime is 20653225469. The reversal of 20653225460 is 6452235602.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20653225460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653225469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14174 + ... + 203733.

It is an arithmetic number, because the mean of its divisors is an integer number (1034191368).

Almost surely, 2^20653225460 is an apocalyptic number.

20653225460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20653225460 is an abundant number, since it is smaller than the sum of its proper divisors (28987960204).

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

20653225460 is a wasteful number, since it uses less digits than its factorization.

20653225460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218600 (or 218598 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 20653225460 in words is "twenty billion, six hundred fifty-three million, two hundred twenty-five thousand, four hundred sixty".