25697233 has 12 divisors (see below), whose sum is σ = 27747328. Its totient is φ = 23771880.

The previous prime is 25697167. The next prime is 25697239. The reversal of 25697233 is 33279652.

It is a de Polignac number, because none of the positive numbers 2^k-25697233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25697192 and 25697201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25697239) 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 11 ways as a sum of consecutive naturals, for example, 15616 + ... + 17182.

Almost surely, 2^25697233 is an apocalyptic number.

25697233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25697233 is a deficient number, since it is larger than the sum of its proper divisors (2050095).

25697233 is a wasteful number, since it uses less digits than its factorization.

25697233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644 (or 1621 counting only the distinct ones).

The product of its digits is 68040, while the sum is 37.

The square root of 25697233 is about 5069.2438292116. The cubic root of 25697233 is about 295.0951833043.

The spelling of 25697233 in words is "twenty-five million, six hundred ninety-seven thousand, two hundred thirty-three".