25211317219 has 4 divisors (see below), whose sum is σ = 27503255160. Its totient is φ = 22919379280.

The previous prime is 25211317217. The next prime is 25211317253. The reversal of 25211317219 is 91271311252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25211317219 - 2¹ = 25211317217 is a prime.

It is a super-2 number, since 2×25211317219² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25211317211) 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, 1145968954 + ... + 1145968975.

It is an arithmetic number, because the mean of its divisors is an integer number (6875813790).

Almost surely, 2^25211317219 is an apocalyptic number.

25211317219 is a deficient number, since it is larger than the sum of its proper divisors (2291937941).

25211317219 is a wasteful number, since it uses less digits than its factorization.

25211317219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291937940.

The product of its digits is 7560, while the sum is 34.

The spelling of 25211317219 in words is "twenty-five billion, two hundred eleven million, three hundred seventeen thousand, two hundred nineteen".