25110216149 has 4 divisors (see below), whose sum is σ = 25116464940. Its totient is φ = 25103967360.

The previous prime is 25110216073. The next prime is 25110216179. The reversal of 25110216149 is 94161201152.

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 5156676100 + 19953540049 = 71810^2 + 141257^2 .

It is a cyclic number.

It is not a de Polignac number, because 25110216149 - 2²⁴ = 25093438933 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 (25110216179) 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, 3118364 + ... + 3126405.

It is an arithmetic number, because the mean of its divisors is an integer number (6279116235).

Almost surely, 2^25110216149 is an apocalyptic number.

It is an amenable number.

25110216149 is a deficient number, since it is larger than the sum of its proper divisors (6248791).

25110216149 is an equidigital number, since it uses as much as digits as its factorization.

25110216149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248790.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 25110216149 in words is "twenty-five billion, one hundred ten million, two hundred sixteen thousand, one hundred forty-nine".