25208642 has 8 divisors (see below), whose sum is σ = 39032832. Its totient is φ = 12197700.

The previous prime is 25208641. The next prime is 25208653. The reversal of 25208642 is 24680252.

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

It is not an unprimeable number, because it can be changed into a prime (25208641) 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, 203234 + ... + 203357.

It is an arithmetic number, because the mean of its divisors is an integer number (4879104).

Almost surely, 2^25208642 is an apocalyptic number.

25208642 is a deficient number, since it is larger than the sum of its proper divisors (13824190).

25208642 is a wasteful number, since it uses less digits than its factorization.

25208642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406624.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 25208642 is about 5020.8208492238. The cubic root of 25208642 is about 293.2129519233.

Adding to 25208642 its reverse (24680252), we get a palindrome (49888894).

The spelling of 25208642 in words is "twenty-five million, two hundred eight thousand, six hundred forty-two".