25470871 has 4 divisors (see below), whose sum is σ = 26292544. Its totient is φ = 24649200.

The previous prime is 25470859. The next prime is 25470877. The reversal of 25470871 is 17807452.

It is a happy number.

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 25470871 - 2⁵ = 25470839 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 (25470877) 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, 410790 + ... + 410851.

It is an arithmetic number, because the mean of its divisors is an integer number (6573136).

Almost surely, 2^25470871 is an apocalyptic number.

25470871 is a deficient number, since it is larger than the sum of its proper divisors (821673).

25470871 is an equidigital number, since it uses as much as digits as its factorization.

25470871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821672.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 25470871 is about 5046.8674442668. The cubic root of 25470871 is about 294.2261475949.

The spelling of 25470871 in words is "twenty-five million, four hundred seventy thousand, eight hundred seventy-one".