25628235053 has 4 divisors (see below), whose sum is σ = 25664382780. Its totient is φ = 25592087328.

The previous prime is 25628235041. The next prime is 25628235089. The reversal of 25628235053 is 35053282652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4451291524 + 21176943529 = 66718^2 + 145523^2 .

It is a cyclic number.

It is not a de Polignac number, because 25628235053 - 2¹⁰ = 25628234029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25628235053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628235653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18072800 + ... + 18074217.

It is an arithmetic number, because the mean of its divisors is an integer number (6416095695).

Almost surely, 2^25628235053 is an apocalyptic number.

It is an amenable number.

25628235053 is a deficient number, since it is larger than the sum of its proper divisors (36147727).

25628235053 is an equidigital number, since it uses as much as digits as its factorization.

25628235053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36147726.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 25628235053 in words is "twenty-five billion, six hundred twenty-eight million, two hundred thirty-five thousand, fifty-three".