28204862725 has 24 divisors (see below), whose sum is σ = 37672979400. Its totient is φ = 20823429120.

The previous prime is 28204862723. The next prime is 28204862731. The reversal of 28204862725 is 52726840282.

It can be written as a sum of positive squares in 12 ways, for example, as 46009089 + 28158853636 = 6783^2 + 167806^2 .

It is not a de Polignac number, because 28204862725 - 2¹ = 28204862723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204862723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2089197 + ... + 2102653.

It is an arithmetic number, because the mean of its divisors is an integer number (1569707475).

Almost surely, 2^28204862725 is an apocalyptic number.

28204862725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28204862725 is a deficient number, since it is larger than the sum of its proper divisors (9468116675).

28204862725 is a wasteful number, since it uses less digits than its factorization.

28204862725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19929 (or 19924 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 28204862725 in words is "twenty-eight billion, two hundred four million, eight hundred sixty-two thousand, seven hundred twenty-five".