25987396 has 6 divisors (see below), whose sum is σ = 45477950. Its totient is φ = 12993696.

The previous prime is 25987391. The next prime is 25987397. The reversal of 25987396 is 69378952.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 7617600 = 4286^2 + 2760^2 .

It is not an unprimeable number, because it can be changed into a prime (25987391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248421 + ... + 3248428.

Almost surely, 2^25987396 is an apocalyptic number.

It is an amenable number.

25987396 is a deficient number, since it is larger than the sum of its proper divisors (19490554).

25987396 is a wasteful number, since it uses less digits than its factorization.

25987396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6496853 (or 6496851 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 25987396 is about 5097.7834398884. The cubic root of 25987396 is about 296.2017282052.

The spelling of 25987396 in words is "twenty-five million, nine hundred eighty-seven thousand, three hundred ninety-six".