25126500265 has 4 divisors (see below), whose sum is σ = 30151800324. Its totient is φ = 20101200208.

The previous prime is 25126500263. The next prime is 25126500299. The reversal of 25126500265 is 56200562152.

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 2702336256 + 22424164009 = 51984^2 + 149747^2 .

It is a cyclic number.

It is not a de Polignac number, because 25126500265 - 2¹ = 25126500263 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 25126500265.

It is not an unprimeable number, because it can be changed into a prime (25126500263) 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, 2512650022 + ... + 2512650031.

It is an arithmetic number, because the mean of its divisors is an integer number (7537950081).

Almost surely, 2^25126500265 is an apocalyptic number.

It is an amenable number.

25126500265 is a deficient number, since it is larger than the sum of its proper divisors (5025300059).

25126500265 is an equidigital number, since it uses as much as digits as its factorization.

25126500265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025300058.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 25126500265 in words is "twenty-five billion, one hundred twenty-six million, five hundred thousand, two hundred sixty-five".