25125647 has 2 divisors, whose sum is σ = 25125648. Its totient is φ = 25125646.

The previous prime is 25125623. The next prime is 25125649. The reversal of 25125647 is 74652152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25125647 - 2¹⁴ = 25109263 is a prime.

Together with 25125649, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1573358 and since 25125647 and 1573358 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25125649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562823 + 12562824.

It is an arithmetic number, because the mean of its divisors is an integer number (12562824).

Almost surely, 2^25125647 is an apocalyptic number.

25125647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25125647 is an equidigital number, since it uses as much as digits as its factorization.

25125647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 32.

The square root of 25125647 is about 5012.5489523794. The cubic root of 25125647 is about 292.8908141903.

Adding to 25125647 its reverse (74652152), we get a palindrome (99777799).

The spelling of 25125647 in words is "twenty-five million, one hundred twenty-five thousand, six hundred forty-seven".