25663142 has 8 divisors (see below), whose sum is σ = 38696832. Its totient is φ = 12764200.

The previous prime is 25663117. The next prime is 25663151. The reversal of 25663142 is 24136652.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33209 + ... + 33972.

It is an arithmetic number, because the mean of its divisors is an integer number (4837104).

Almost surely, 2^25663142 is an apocalyptic number.

25663142 is a deficient number, since it is larger than the sum of its proper divisors (13033690).

25663142 is a wasteful number, since it uses less digits than its factorization.

25663142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67374.

The product of its digits is 8640, while the sum is 29.

The square root of 25663142 is about 5065.8801801859. The cubic root of 25663142 is about 294.9646304430.

Adding to 25663142 its reverse (24136652), we get a palindrome (49799794).

The spelling of 25663142 in words is "twenty-five million, six hundred sixty-three thousand, one hundred forty-two".