25486348861 has 4 divisors (see below), whose sum is σ = 25569366592. Its totient is φ = 25403331132.

The previous prime is 25486348819. The next prime is 25486348879. The reversal of 25486348861 is 16884368452.

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 25486348861 - 2²³ = 25477960253 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 (25486348561) 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, 41508405 + ... + 41509018.

It is an arithmetic number, because the mean of its divisors is an integer number (6392341648).

Almost surely, 2^25486348861 is an apocalyptic number.

It is an amenable number.

25486348861 is a deficient number, since it is larger than the sum of its proper divisors (83017731).

25486348861 is an equidigital number, since it uses as much as digits as its factorization.

25486348861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83017730.

The product of its digits is 8847360, while the sum is 55.

The spelling of 25486348861 in words is "twenty-five billion, four hundred eighty-six million, three hundred forty-eight thousand, eight hundred sixty-one".