25388071 has 2 divisors, whose sum is σ = 25388072. Its totient is φ = 25388070.

The previous prime is 25388057. The next prime is 25388081. The reversal of 25388071 is 17088352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25388071 - 2⁹ = 25387559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25388081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694035 + 12694036.

It is an arithmetic number, because the mean of its divisors is an integer number (12694036).

Almost surely, 2^25388071 is an apocalyptic number.

25388071 is a deficient number, since it is larger than the sum of its proper divisors (1).

25388071 is an equidigital number, since it uses as much as digits as its factorization.

25388071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 25388071 is about 5038.6576585436. The cubic root of 25388071 is about 293.9069807689.

It can be divided in two parts, 2538 and 8071, that added together give a square (10609 = 103²).

The spelling of 25388071 in words is "twenty-five million, three hundred eighty-eight thousand, seventy-one".