25151471 has 2 divisors, whose sum is σ = 25151472. Its totient is φ = 25151470.

The previous prime is 25151437. The next prime is 25151473. The reversal of 25151471 is 17415152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25151471 is a prime.

It is a super-3 number, since 3×25151471³ (a number of 23 digits) contains 333 as substring.

Together with 25151473, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25151471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25151473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575735 + 12575736.

It is an arithmetic number, because the mean of its divisors is an integer number (12575736).

Almost surely, 2^25151471 is an apocalyptic number.

25151471 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151471 is an equidigital number, since it uses as much as digits as its factorization.

25151471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 26.

The square root of 25151471 is about 5015.1242257795. The cubic root of 25151471 is about 292.9911236813.

The spelling of 25151471 in words is "twenty-five million, one hundred fifty-one thousand, four hundred seventy-one".