25555042 has 4 divisors (see below), whose sum is σ = 38332566. Its totient is φ = 12777520.

The previous prime is 25555039. The next prime is 25555069. The reversal of 25555042 is 24055552.

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., 21986721 + 3568321 = 4689^2 + 1889^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25555042.

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 as a sum of consecutive naturals, namely, 6388759 + ... + 6388762.

Almost surely, 2^25555042 is an apocalyptic number.

25555042 is a deficient number, since it is larger than the sum of its proper divisors (12777524).

25555042 is a wasteful number, since it uses less digits than its factorization.

25555042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777523.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25555042 is about 5055.1995015034. The cubic root of 25555042 is about 294.5498909963.

The spelling of 25555042 in words is "twenty-five million, five hundred fifty-five thousand, forty-two".