25213421435 has 8 divisors (see below), whose sum is σ = 30258304080. Its totient is φ = 20169271584.

The previous prime is 25213421383. The next prime is 25213421447. The reversal of 25213421435 is 53412431252.

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

It is a cyclic number.

It is not a de Polignac number, because 25213421435 - 2²⁴ = 25196644219 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 104420 + ... + 247649.

It is an arithmetic number, because the mean of its divisors is an integer number (3782288010).

Almost surely, 2^25213421435 is an apocalyptic number.

25213421435 is a deficient number, since it is larger than the sum of its proper divisors (5044882645).

25213421435 is a wasteful number, since it uses less digits than its factorization.

25213421435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366397.

The product of its digits is 28800, while the sum is 32.

Adding to 25213421435 its reverse (53412431252), we get a palindrome (78625852687).

The spelling of 25213421435 in words is "twenty-five billion, two hundred thirteen million, four hundred twenty-one thousand, four hundred thirty-five".