25022642 has 8 divisors (see below), whose sum is σ = 38744832. Its totient is φ = 12107700.

The previous prime is 25022629. The next prime is 25022651. The reversal of 25022642 is 24622052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×25022642³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201734 + ... + 201857.

It is an arithmetic number, because the mean of its divisors is an integer number (4843104).

Almost surely, 2^25022642 is an apocalyptic number.

25022642 is a deficient number, since it is larger than the sum of its proper divisors (13722190).

25022642 is a wasteful number, since it uses less digits than its factorization.

25022642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403624.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 25022642 is about 5002.2636875719. The cubic root of 25022642 is about 292.4900213315.

Adding to 25022642 its reverse (24622052), we get a palindrome (49644694).

The spelling of 25022642 in words is "twenty-five million, twenty-two thousand, six hundred forty-two".