25300642 has 4 divisors (see below), whose sum is σ = 37950966. Its totient is φ = 12650320.

The previous prime is 25300633. The next prime is 25300643. The reversal of 25300642 is 24600352.

It is a happy number.

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., 25290841 + 9801 = 5029^2 + 99^2 .

It is a super-2 number, since 2×25300642² = 1280244971224328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25300643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325159 + ... + 6325162.

Almost surely, 2^25300642 is an apocalyptic number.

25300642 is a deficient number, since it is larger than the sum of its proper divisors (12650324).

25300642 is a wasteful number, since it uses less digits than its factorization.

25300642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12650323.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25300642 is about 5029.9743538114. The cubic root of 25300642 is about 293.5692165430.

Adding to 25300642 its reverse (24600352), we get a palindrome (49900994).

The spelling of 25300642 in words is "twenty-five million, three hundred thousand, six hundred forty-two".