25425043355 has 4 divisors (see below), whose sum is σ = 30510052032. Its totient is φ = 20340034680.

The previous prime is 25425043351. The next prime is 25425043373. The reversal of 25425043355 is 55334052452.

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

It is not a de Polignac number, because 25425043355 - 2² = 25425043351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25425043351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542504331 + ... + 2542504340.

It is an arithmetic number, because the mean of its divisors is an integer number (7627513008).

Almost surely, 2^25425043355 is an apocalyptic number.

25425043355 is a deficient number, since it is larger than the sum of its proper divisors (5085008677).

25425043355 is an equidigital number, since it uses as much as digits as its factorization.

25425043355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085008676.

The product of its (nonzero) digits is 360000, while the sum is 38.

The spelling of 25425043355 in words is "twenty-five billion, four hundred twenty-five million, forty-three thousand, three hundred fifty-five".