25627961 has 2 divisors, whose sum is σ = 25627962. Its totient is φ = 25627960.

The previous prime is 25627951. The next prime is 25627963. The reversal of 25627961 is 16972652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16362025 + 9265936 = 4045^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 25627961 - 2⁶ = 25627897 is a prime.

Together with 25627963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25627963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12813980 + 12813981.

It is an arithmetic number, because the mean of its divisors is an integer number (12813981).

Almost surely, 2^25627961 is an apocalyptic number.

It is an amenable number.

25627961 is a deficient number, since it is larger than the sum of its proper divisors (1).

25627961 is an equidigital number, since it uses as much as digits as its factorization.

25627961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 25627961 is about 5062.4066411145. The cubic root of 25627961 is about 294.8297821041.

The spelling of 25627961 in words is "twenty-five million, six hundred twenty-seven thousand, nine hundred sixty-one".