25655039 has 2 divisors, whose sum is σ = 25655040. Its totient is φ = 25655038.

The previous prime is 25655033. The next prime is 25655081. The reversal of 25655039 is 93055652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25655039 - 2¹⁶ = 25589503 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 (25655033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827519 + 12827520.

It is an arithmetic number, because the mean of its divisors is an integer number (12827520).

Almost surely, 2^25655039 is an apocalyptic number.

25655039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25655039 is an equidigital number, since it uses as much as digits as its factorization.

25655039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 25655039 is about 5065.0803547427. The cubic root of 25655039 is about 294.9335826729.

The spelling of 25655039 in words is "twenty-five million, six hundred fifty-five thousand, thirty-nine".