25388387 has 2 divisors, whose sum is σ = 25388388. Its totient is φ = 25388386.

The previous prime is 25388381. The next prime is 25388459. The reversal of 25388387 is 78388352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25388387 - 2⁴ = 25388371 is a prime.

It is not a weakly prime, because it can be changed into another prime (25388381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694193 + 12694194.

It is an arithmetic number, because the mean of its divisors is an integer number (12694194).

Almost surely, 2^25388387 is an apocalyptic number.

25388387 is a deficient number, since it is larger than the sum of its proper divisors (1).

25388387 is an equidigital number, since it uses as much as digits as its factorization.

25388387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 25388387 is about 5038.6890160041. The cubic root of 25388387 is about 293.9082001634.

The spelling of 25388387 in words is "twenty-five million, three hundred eighty-eight thousand, three hundred eighty-seven".