25753245109 has 4 divisors (see below), whose sum is σ = 25782411616. Its totient is φ = 25724078604.

The previous prime is 25753245103. The next prime is 25753245121. The reversal of 25753245109 is 90154235752.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25753245109 - 2³ = 25753245101 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 (25753245101) 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, 14581929 + ... + 14583694.

It is an arithmetic number, because the mean of its divisors is an integer number (6445602904).

Almost surely, 2^25753245109 is an apocalyptic number.

It is an amenable number.

25753245109 is a deficient number, since it is larger than the sum of its proper divisors (29166507).

25753245109 is an equidigital number, since it uses as much as digits as its factorization.

25753245109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29166506.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 25753245109 in words is "twenty-five billion, seven hundred fifty-three million, two hundred forty-five thousand, one hundred nine".