25654042 has 4 divisors (see below), whose sum is σ = 38481066. Its totient is φ = 12827020.

The previous prime is 25654033. The next prime is 25654043. The reversal of 25654042 is 24045652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16719921 + 8934121 = 4089^2 + 2989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25654042.

It is not an unprimeable number, because it can be changed into a prime (25654043) by changing a digit.

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 as a sum of consecutive naturals, namely, 6413509 + ... + 6413512.

Almost surely, 2^25654042 is an apocalyptic number.

25654042 is a deficient number, since it is larger than the sum of its proper divisors (12827024).

25654042 is a wasteful number, since it uses less digits than its factorization.

25654042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12827023.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 25654042 is about 5064.9819348148. The cubic root of 25654042 is about 294.9297620772.

Adding to 25654042 its reverse (24045652), we get a palindrome (49699694).

The spelling of 25654042 in words is "twenty-five million, six hundred fifty-four thousand, forty-two".