25343404420 has 12 divisors (see below), whose sum is σ = 53221149324. Its totient is φ = 10137361760.

The previous prime is 25343404403. The next prime is 25343404423. The reversal of 25343404420 is 2440434352.

It can be written as a sum of positive squares in 2 ways, for example, as 17694852484 + 7648551936 = 133022^2 + 87456^2 .

It is a super-3 number, since 3×25343404420³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25343404423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633585091 + ... + 633585130.

It is an arithmetic number, because the mean of its divisors is an integer number (4435095777).

Almost surely, 2^25343404420 is an apocalyptic number.

25343404420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25343404420 is an abundant number, since it is smaller than the sum of its proper divisors (27877744904).

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

25343404420 is a wasteful number, since it uses less digits than its factorization.

25343404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267170230 (or 1267170228 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 25343404420 its reverse (2440434352), we get a palindrome (27783838772).

The spelling of 25343404420 in words is "twenty-five billion, three hundred forty-three million, four hundred four thousand, four hundred twenty".