25009471 has 2 divisors, whose sum is σ = 25009472. Its totient is φ = 25009470.

The previous prime is 25009469. The next prime is 25009483. The reversal of 25009471 is 17490052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25009471 - 2¹ = 25009469 is a prime.

It is a super-3 number, since 3×25009471³ (a number of 23 digits) contains 333 as substring.

Together with 25009469, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25009421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12504735 + 12504736.

It is an arithmetic number, because the mean of its divisors is an integer number (12504736).

Almost surely, 2^25009471 is an apocalyptic number.

25009471 is a deficient number, since it is larger than the sum of its proper divisors (1).

25009471 is an equidigital number, since it uses as much as digits as its factorization.

25009471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 25009471 is about 5000.9470103171. The cubic root of 25009471 is about 292.4386936554.

The spelling of 25009471 in words is "twenty-five million, nine thousand, four hundred seventy-one".