25486951047 has 4 divisors (see below), whose sum is σ = 33982601400. Its totient is φ = 16991300696.

The previous prime is 25486951027. The next prime is 25486951067. The reversal of 25486951047 is 74015968452.

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

It is an interprime number because it is at equal distance from previous prime (25486951027) and next prime (25486951067).

It is a cyclic number.

It is not a de Polignac number, because 25486951047 - 2¹¹ = 25486948999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25486951027) 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, 4247825172 + ... + 4247825177.

It is an arithmetic number, because the mean of its divisors is an integer number (8495650350).

Almost surely, 2^25486951047 is an apocalyptic number.

25486951047 is a deficient number, since it is larger than the sum of its proper divisors (8495650353).

25486951047 is an equidigital number, since it uses as much as digits as its factorization.

25486951047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495650352.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 25486951047 in words is "twenty-five billion, four hundred eighty-six million, nine hundred fifty-one thousand, forty-seven".