25480847 has 4 divisors (see below), whose sum is σ = 29120976. Its totient is φ = 21840720.

The previous prime is 25480823. The next prime is 25480883. The reversal of 25480847 is 74808452.

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 25480847 - 2⁸ = 25480591 is a prime.

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 25480847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1820054 + ... + 1820067.

It is an arithmetic number, because the mean of its divisors is an integer number (7280244).

Almost surely, 2^25480847 is an apocalyptic number.

25480847 is a deficient number, since it is larger than the sum of its proper divisors (3640129).

25480847 is an equidigital number, since it uses as much as digits as its factorization.

25480847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640128.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 25480847 is about 5047.8556833570. The cubic root of 25480847 is about 294.2645550883.

The spelling of 25480847 in words is "twenty-five million, four hundred eighty thousand, eight hundred forty-seven".