25847951 has 2 divisors, whose sum is σ = 25847952. Its totient is φ = 25847950.

The previous prime is 25847909. The next prime is 25847971. The reversal of 25847951 is 15974852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25847951 - 2¹⁰ = 25846927 is a prime.

It is a super-3 number, since 3×25847951³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25847899 and 25847908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25847971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12923975 + 12923976.

It is an arithmetic number, because the mean of its divisors is an integer number (12923976).

Almost surely, 2^25847951 is an apocalyptic number.

25847951 is a deficient number, since it is larger than the sum of its proper divisors (1).

25847951 is an equidigital number, since it uses as much as digits as its factorization.

25847951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 25847951 is about 5084.0880204812. The cubic root of 25847951 is about 295.6709844035.

The spelling of 25847951 in words is "twenty-five million, eight hundred forty-seven thousand, nine hundred fifty-one".