25155242 has 8 divisors (see below), whose sum is σ = 43123296. Its totient is φ = 10780812.

The previous prime is 25155239. The next prime is 25155287. The reversal of 25155242 is 24255152.

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

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898388 + ... + 898415.

It is an arithmetic number, because the mean of its divisors is an integer number (5390412).

Almost surely, 2^25155242 is an apocalyptic number.

25155242 is a deficient number, since it is larger than the sum of its proper divisors (17968054).

25155242 is a wasteful number, since it uses less digits than its factorization.

25155242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796812.

The product of its digits is 4000, while the sum is 26.

The square root of 25155242 is about 5015.5001744592. The cubic root of 25155242 is about 293.0057658244.

The spelling of 25155242 in words is "twenty-five million, one hundred fifty-five thousand, two hundred forty-two".