25648031 has 4 divisors (see below), whose sum is σ = 25850112. Its totient is φ = 25445952.

The previous prime is 25648009. The next prime is 25648033. The reversal of 25648031 is 13084652.

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

It is a cyclic number.

It is not a de Polignac number, because 25648031 - 2²² = 21453727 is a prime.

It is a super-2 number, since 2×25648031² = 1315642988353922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25647985 and 25648003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25648033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100850 + ... + 101103.

It is an arithmetic number, because the mean of its divisors is an integer number (6462528).

Almost surely, 2^25648031 is an apocalyptic number.

25648031 is a deficient number, since it is larger than the sum of its proper divisors (202081).

25648031 is a wasteful number, since it uses less digits than its factorization.

25648031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202080.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 25648031 is about 5064.3885119528. The cubic root of 25648031 is about 294.9067252749.

The spelling of 25648031 in words is "twenty-five million, six hundred forty-eight thousand, thirty-one".