20484906725 has 6 divisors (see below), whose sum is σ = 25401284370. Its totient is φ = 16387925360.

The previous prime is 20484906661. The next prime is 20484906749. The reversal of 20484906725 is 52760948402.

It can be written as a sum of positive squares in 3 ways, for example, as 1334221729 + 19150684996 = 36527^2 + 138386^2 .

It is not a de Polignac number, because 20484906725 - 2⁶ = 20484906661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20484906725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 409698110 + ... + 409698159.

It is an arithmetic number, because the mean of its divisors is an integer number (4233547395).

Almost surely, 2^20484906725 is an apocalyptic number.

20484906725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20484906725 is a deficient number, since it is larger than the sum of its proper divisors (4916377645).

20484906725 is an equidigital number, since it uses as much as digits as its factorization.

20484906725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819396279 (or 819396274 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 20484906725 in words is "twenty billion, four hundred eighty-four million, nine hundred six thousand, seven hundred twenty-five".