28614424725 has 18 divisors (see below), whose sum is σ = 51251614466. Its totient is φ = 15261026400.

The previous prime is 28614424723. The next prime is 28614424793. The reversal of 28614424725 is 52742441682.

28614424725 is a `hidden beast` number, since 2 + 8 + 614 + 4 + 2 + 4 + 7 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 6413126724 + 22201298001 = 80082^2 + 149001^2 .

It is not a de Polignac number, because 28614424725 - 2¹ = 28614424723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28614424723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63587386 + ... + 63587835.

Almost surely, 2^28614424725 is an apocalyptic number.

28614424725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28614424725 is a deficient number, since it is larger than the sum of its proper divisors (22637189741).

28614424725 is a wasteful number, since it uses less digits than its factorization.

28614424725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127175237 (or 127175229 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 28614424725 in words is "twenty-eight billion, six hundred fourteen million, four hundred twenty-four thousand, seven hundred twenty-five".