25242482947 has 4 divisors (see below), whose sum is σ = 27537254136. Its totient is φ = 22947711760.

The previous prime is 25242482921. The next prime is 25242482981. The reversal of 25242482947 is 74928424252.

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 25242482947 - 2¹¹ = 25242480899 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25242482947.

It is not an unprimeable number, because it can be changed into a prime (25242482647) 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, 1147385578 + ... + 1147385599.

It is an arithmetic number, because the mean of its divisors is an integer number (6884313534).

Almost surely, 2^25242482947 is an apocalyptic number.

25242482947 is a deficient number, since it is larger than the sum of its proper divisors (2294771189).

25242482947 is a wasteful number, since it uses less digits than its factorization.

25242482947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294771188.

The product of its digits is 2580480, while the sum is 49.

The spelling of 25242482947 in words is "twenty-five billion, two hundred forty-two million, four hundred eighty-two thousand, nine hundred forty-seven".