15705425620 has 12 divisors (see below), whose sum is σ = 32981393844. Its totient is φ = 6282170240.

The previous prime is 15705425597. The next prime is 15705425621. The reversal of 15705425620 is 2652450751.

15705425620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1963021636 + 13742403984 = 44306^2 + 117228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15705425620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15705425621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392635621 + ... + 392635660.

It is an arithmetic number, because the mean of its divisors is an integer number (2748449487).

Almost surely, 2^15705425620 is an apocalyptic number.

15705425620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15705425620 is an abundant number, since it is smaller than the sum of its proper divisors (17275968224).

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

15705425620 is a wasteful number, since it uses less digits than its factorization.

15705425620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785271290 (or 785271288 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 15705425620 in words is "fifteen billion, seven hundred five million, four hundred twenty-five thousand, six hundred twenty".