25194242 has 4 divisors (see below), whose sum is σ = 37791366. Its totient is φ = 12597120.

The previous prime is 25194217. The next prime is 25194263. The reversal of 25194242 is 24249152.

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., 23030401 + 2163841 = 4799^2 + 1471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6298559 + ... + 6298562.

Almost surely, 2^25194242 is an apocalyptic number.

25194242 is a deficient number, since it is larger than the sum of its proper divisors (12597124).

25194242 is a wasteful number, since it uses less digits than its factorization.

25194242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12597123.

The product of its digits is 5760, while the sum is 29.

The square root of 25194242 is about 5019.3866159123. The cubic root of 25194242 is about 293.1571103495.

The spelling of 25194242 in words is "twenty-five million, one hundred ninety-four thousand, two hundred forty-two".