25320012265 has 8 divisors (see below), whose sum is σ = 30652900488. Its totient is φ = 20076752640.

The previous prime is 25320012251. The next prime is 25320012269. The reversal of 25320012265 is 56221002352.

It can be written as a sum of positive squares in 4 ways, for example, as 3014888464 + 22305123801 = 54908^2 + 149349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25320012265 is a prime.

It is a super-2 number, since 2×25320012265² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25320012269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22406526 + ... + 22407655.

It is an arithmetic number, because the mean of its divisors is an integer number (3831612561).

Almost surely, 2^25320012265 is an apocalyptic number.

It is an amenable number.

25320012265 is a deficient number, since it is larger than the sum of its proper divisors (5332888223).

25320012265 is a wasteful number, since it uses less digits than its factorization.

25320012265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44814299.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 25320012265 in words is "twenty-five billion, three hundred twenty million, twelve thousand, two hundred sixty-five".