25427957 has 2 divisors, whose sum is σ = 25427958. Its totient is φ = 25427956.

The previous prime is 25427953. The next prime is 25427981. The reversal of 25427957 is 75972452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25260676 + 167281 = 5026^2 + 409^2 .

It is a cyclic number.

It is not a de Polignac number, because 25427957 - 2² = 25427953 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25427951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12713978 + 12713979.

It is an arithmetic number, because the mean of its divisors is an integer number (12713979).

Almost surely, 2^25427957 is an apocalyptic number.

It is an amenable number.

25427957 is a deficient number, since it is larger than the sum of its proper divisors (1).

25427957 is an equidigital number, since it uses as much as digits as its factorization.

25427957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 25427957 is about 5042.6141038156. The cubic root of 25427957 is about 294.0608146982.

The spelling of 25427957 in words is "twenty-five million, four hundred twenty-seven thousand, nine hundred fifty-seven".