2025235561 has 4 divisors (see below), whose sum is σ = 2095071300. Its totient is φ = 1955399824.

The previous prime is 2025235519. The next prime is 2025235577. The reversal of 2025235561 is 1655325202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 336025561 + 1689210000 = 18331^2 + 41100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025235561 - 2⁹ = 2025235049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2025235591) 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, 34917826 + ... + 34917883.

It is an arithmetic number, because the mean of its divisors is an integer number (523767825).

Almost surely, 2^2025235561 is an apocalyptic number.

It is an amenable number.

2025235561 is a deficient number, since it is larger than the sum of its proper divisors (69835739).

2025235561 is an equidigital number, since it uses as much as digits as its factorization.

2025235561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69835738.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2025235561 is about 45002.6172683323. The cubic root of 2025235561 is about 1265.1980528017.

The spelling of 2025235561 in words is "two billion, twenty-five million, two hundred thirty-five thousand, five hundred sixty-one".