25555428935 has 4 divisors (see below), whose sum is σ = 30666514728. Its totient is φ = 20444343144.

The previous prime is 25555428893. The next prime is 25555428967. The reversal of 25555428935 is 53982455552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25555428935 - 2¹⁶ = 25555363399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555542889 + ... + 2555542898.

It is an arithmetic number, because the mean of its divisors is an integer number (7666628682).

Almost surely, 2^25555428935 is an apocalyptic number.

25555428935 is a deficient number, since it is larger than the sum of its proper divisors (5111085793).

25555428935 is an equidigital number, since it uses as much as digits as its factorization.

25555428935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111085792.

The product of its digits is 10800000, while the sum is 53.

The spelling of 25555428935 in words is "twenty-five billion, five hundred fifty-five million, four hundred twenty-eight thousand, nine hundred thirty-five".