25480719361 has 4 divisors (see below), whose sum is σ = 25481041924. Its totient is φ = 25480396800.

The previous prime is 25480719343. The next prime is 25480719389. The reversal of 25480719361 is 16391708452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10877447025 + 14603272336 = 104295^2 + 120844^2 .

It is a 3-Lehmer number, since φ(25480719361) divides (25480719361-1)³.

It is a cyclic number.

It is not a de Polignac number, because 25480719361 - 2⁷ = 25480719233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25480749361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46081 + ... + 230401.

It is an arithmetic number, because the mean of its divisors is an integer number (6370260481).

It is a 2-persistent number, because it is pandigital, and so is 2⋅25480719361 = 50961438722, but 3⋅25480719361 = 76442158083 is not.

Almost surely, 2^25480719361 is an apocalyptic number.

It is an amenable number.

25480719361 is a deficient number, since it is larger than the sum of its proper divisors (322563).

25480719361 is a wasteful number, since it uses less digits than its factorization.

25480719361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322562.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 25480719361 in words is "twenty-five billion, four hundred eighty million, seven hundred nineteen thousand, three hundred sixty-one".