25289998 has 8 divisors (see below), whose sum is σ = 38005992. Its totient is φ = 12621336.

The previous prime is 25289993. The next prime is 25290019. The reversal of 25289998 is 89998252.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25289993) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10465 + ... + 12652.

It is an arithmetic number, because the mean of its divisors is an integer number (4750749).

Almost surely, 2^25289998 is an apocalyptic number.

25289998 is a deficient number, since it is larger than the sum of its proper divisors (12715994).

25289998 is a wasteful number, since it uses less digits than its factorization.

25289998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23666.

The product of its digits is 933120, while the sum is 52.

The square root of 25289998 is about 5028.9161854221. The cubic root of 25289998 is about 293.5280425017.

It can be divided in two parts, 2 and 5289998, that added together give a square (5290000 = 2300²).

The spelling of 25289998 in words is "twenty-five million, two hundred eighty-nine thousand, nine hundred ninety-eight".