25001134109 has 4 divisors (see below), whose sum is σ = 28572724704. Its totient is φ = 21429543516.

The previous prime is 25001134063. The next prime is 25001134121. The reversal of 25001134109 is 90143110052.

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 25001134109 - 2¹² = 25001130013 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 (25001134139) 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, 1785795287 + ... + 1785795300.

It is an arithmetic number, because the mean of its divisors is an integer number (7143181176).

Almost surely, 2^25001134109 is an apocalyptic number.

It is an amenable number.

25001134109 is a deficient number, since it is larger than the sum of its proper divisors (3571590595).

25001134109 is an equidigital number, since it uses as much as digits as its factorization.

25001134109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571590594.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 25001134109 in words is "twenty-five billion, one million, one hundred thirty-four thousand, one hundred nine".