25463638 has 16 divisors (see below), whose sum is σ = 39121056. Its totient is φ = 12425920.

The previous prime is 25463597. The next prime is 25463639. The reversal of 25463638 is 83636452.

It is a junction number, because it is equal to n+sod(n) for n = 25463597 and 25463606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25463639) 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 in 7 ways as a sum of consecutive naturals, for example, 24183 + ... + 25213.

It is an arithmetic number, because the mean of its divisors is an integer number (2445066).

Almost surely, 2^25463638 is an apocalyptic number.

25463638 is a deficient number, since it is larger than the sum of its proper divisors (13657418).

25463638 is a wasteful number, since it uses less digits than its factorization.

25463638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319.

The product of its digits is 103680, while the sum is 37.

The square root of 25463638 is about 5046.1508102711. The cubic root of 25463638 is about 294.1982943503.

The spelling of 25463638 in words is "twenty-five million, four hundred sixty-three thousand, six hundred thirty-eight".