25250643 has 48 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 14929200.

The previous prime is 25250623. The next prime is 25250651. The reversal of 25250643 is 34605252.

It is not a de Polignac number, because 25250643 - 2⁶ = 25250579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25250623) 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 47 ways as a sum of consecutive naturals, for example, 192688 + ... + 192818.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^25250643 is an apocalyptic number.

25250643 is a deficient number, since it is larger than the sum of its proper divisors (16883757).

25250643 is a wasteful number, since it uses less digits than its factorization.

25250643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25250643 is about 5025.0017910445. The cubic root of 25250643 is about 293.3757056845.

Adding to 25250643 its reverse (34605252), we get a palindrome (59855895).

The spelling of 25250643 in words is "twenty-five million, two hundred fifty thousand, six hundred forty-three".