25034643 has 16 divisors (see below), whose sum is σ = 37952640. Its totient is φ = 16300872.

The previous prime is 25034629. The next prime is 25034677. The reversal of 25034643 is 34643052.

It is not a de Polignac number, because 25034643 - 2⁶ = 25034579 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (25034843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9621 + ... + 11942.

It is an arithmetic number, because the mean of its divisors is an integer number (2372040).

Almost surely, 2^25034643 is an apocalyptic number.

25034643 is a deficient number, since it is larger than the sum of its proper divisors (12917997).

25034643 is a wasteful number, since it uses less digits than its factorization.

25034643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21615 (or 21609 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 25034643 is about 5003.4631006934. The cubic root of 25034643 is about 292.5367738118.

Adding to 25034643 its reverse (34643052), we get a palindrome (59677695).

The spelling of 25034643 in words is "twenty-five million, thirty-four thousand, six hundred forty-three".