25996634 has 4 divisors (see below), whose sum is σ = 38994954. Its totient is φ = 12998316.

The previous prime is 25996591. The next prime is 25996637. The reversal of 25996634 is 43669952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16785409 + 9211225 = 4097^2 + 3035^2 .

It is not an unprimeable number, because it can be changed into a prime (25996637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499157 + ... + 6499160.

Almost surely, 2^25996634 is an apocalyptic number.

25996634 is a deficient number, since it is larger than the sum of its proper divisors (12998320).

25996634 is a wasteful number, since it uses less digits than its factorization.

25996634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998319.

The product of its digits is 349920, while the sum is 44.

The square root of 25996634 is about 5098.6894394540. The cubic root of 25996634 is about 296.2368219790.

The spelling of 25996634 in words is "twenty-five million, nine hundred ninety-six thousand, six hundred thirty-four".