25657061 has 2 divisors, whose sum is σ = 25657062. Its totient is φ = 25657060.

The previous prime is 25657039. The next prime is 25657109. The reversal of 25657061 is 16075652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 7806436 = 4225^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 25657061 - 2¹⁴ = 25640677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25657031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828530 + 12828531.

It is an arithmetic number, because the mean of its divisors is an integer number (12828531).

Almost surely, 2^25657061 is an apocalyptic number.

It is an amenable number.

25657061 is a deficient number, since it is larger than the sum of its proper divisors (1).

25657061 is an equidigital number, since it uses as much as digits as its factorization.

25657061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25657061 is about 5065.2799527765. The cubic root of 25657061 is about 294.9413308588.

The spelling of 25657061 in words is "twenty-five million, six hundred fifty-seven thousand, sixty-one".