25072642 has 16 divisors (see below), whose sum is σ = 43071552. Its totient is φ = 10722960.

The previous prime is 25072639. The next prime is 25072661. The reversal of 25072642 is 24627052.

It is a self number, because there is not a number n which added to its sum of digits gives 25072642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6292 + ... + 9472.

It is an arithmetic number, because the mean of its divisors is an integer number (2691972).

Almost surely, 2^25072642 is an apocalyptic number.

25072642 is a deficient number, since it is larger than the sum of its proper divisors (17998910).

25072642 is a wasteful number, since it uses less digits than its factorization.

25072642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 25072642 is about 5007.2589307924. The cubic root of 25072642 is about 292.6847086207.

Adding to 25072642 its reverse (24627052), we get a palindrome (49699694).

The spelling of 25072642 in words is "twenty-five million, seventy-two thousand, six hundred forty-two".