25243898 has 4 divisors (see below), whose sum is σ = 37865850. Its totient is φ = 12621948.

The previous prime is 25243853. The next prime is 25243927. The reversal of 25243898 is 89834252.

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., 22972849 + 2271049 = 4793^2 + 1507^2 .

It is a Curzon number.

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, 6310973 + ... + 6310976.

Almost surely, 2^25243898 is an apocalyptic number.

25243898 is a deficient number, since it is larger than the sum of its proper divisors (12621952).

25243898 is a wasteful number, since it uses less digits than its factorization.

25243898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12621951.

The product of its digits is 138240, while the sum is 41.

The square root of 25243898 is about 5024.3306021798. The cubic root of 25243898 is about 293.3495809986.

The spelling of 25243898 in words is "twenty-five million, two hundred forty-three thousand, eight hundred ninety-eight".