25067989 has 2 divisors, whose sum is σ = 25067990. Its totient is φ = 25067988.

The previous prime is 25067971. The next prime is 25068031. The reversal of 25067989 is 98976052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 396900 = 4967^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 25067989 - 2⁹ = 25067477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25067969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12533994 + 12533995.

It is an arithmetic number, because the mean of its divisors is an integer number (12533995).

Almost surely, 2^25067989 is an apocalyptic number.

It is an amenable number.

25067989 is a deficient number, since it is larger than the sum of its proper divisors (1).

25067989 is an equidigital number, since it uses as much as digits as its factorization.

25067989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 25067989 is about 5006.7942837708. The cubic root of 25067989 is about 292.6666019502. Note that the first 4 decimals are identical.

The spelling of 25067989 in words is "twenty-five million, sixty-seven thousand, nine hundred eighty-nine".