25325251205 has 4 divisors (see below), whose sum is σ = 30390301452. Its totient is φ = 20260200960.

The previous prime is 25325251181. The next prime is 25325251207. The reversal of 25325251205 is 50215252352.

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 8723186404 + 16602064801 = 93398^2 + 128849^2 .

It is not a de Polignac number, because 25325251205 - 2¹² = 25325247109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25325251207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532525116 + ... + 2532525125.

It is an arithmetic number, because the mean of its divisors is an integer number (7597575363).

Almost surely, 2^25325251205 is an apocalyptic number.

It is an amenable number.

25325251205 is a deficient number, since it is larger than the sum of its proper divisors (5065050247).

25325251205 is an equidigital number, since it uses as much as digits as its factorization.

25325251205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065050246.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 25325251205 in words is "twenty-five billion, three hundred twenty-five million, two hundred fifty-one thousand, two hundred five".