25021140430242 has 64 divisors (see below), whose sum is σ = 54961310638080. Its totient is φ = 7530967094400.

The previous prime is 25021140430241. The next prime is 25021140430301. The reversal of 25021140430242 is 24203404112052.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25021140430241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4524942 + ... + 8397462.

It is an arithmetic number, because the mean of its divisors is an integer number (858770478720).

Almost surely, 2^{25021140430242} is an apocalyptic number.

25021140430242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25021140430242 is an abundant number, since it is smaller than the sum of its proper divisors (29940170207838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25021140430242 is a wasteful number, since it uses less digits than its factorization.

25021140430242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873199.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 25021140430242 its reverse (24203404112052), we get a palindrome (49224544542294).

The spelling of 25021140430242 in words is "twenty-five trillion, twenty-one billion, one hundred forty million, four hundred thirty thousand, two hundred forty-two".