25657361 has 2 divisors, whose sum is σ = 25657362. Its totient is φ = 25657360.

The previous prime is 25657339. The next prime is 25657409. The reversal of 25657361 is 16375652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 3136 = 5065^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 25657361 - 2⁶ = 25657297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25657321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828680 + 12828681.

It is an arithmetic number, because the mean of its divisors is an integer number (12828681).

Almost surely, 2^25657361 is an apocalyptic number.

It is an amenable number.

25657361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25657361 is an equidigital number, since it uses as much as digits as its factorization.

25657361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 25657361 is about 5065.3095660581. The cubic root of 25657361 is about 294.9424804066.

The spelling of 25657361 in words is "twenty-five million, six hundred fifty-seven thousand, three hundred sixty-one".