25952989 has 2 divisors, whose sum is σ = 25952990. Its totient is φ = 25952988.

The previous prime is 25952933. The next prime is 25953007. The reversal of 25952989 is 98925952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14784025 + 11168964 = 3845^2 + 3342^2 .

It is a cyclic number.

It is not a de Polignac number, because 25952989 - 2¹⁵ = 25920221 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 (25952929) 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, 12976494 + 12976495.

It is an arithmetic number, because the mean of its divisors is an integer number (12976495).

Almost surely, 2^25952989 is an apocalyptic number.

It is an amenable number.

25952989 is a deficient number, since it is larger than the sum of its proper divisors (1).

25952989 is an equidigital number, since it uses as much as digits as its factorization.

25952989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 49.

The square root of 25952989 is about 5094.4076201262. The cubic root of 25952989 is about 296.0709479615.

The spelling of 25952989 in words is "twenty-five million, nine hundred fifty-two thousand, nine hundred eighty-nine".