2025612561 has 16 divisors (see below), whose sum is σ = 3193084800. Its totient is φ = 1117579008.

The previous prime is 2025612557. The next prime is 2025612583. The reversal of 2025612561 is 1652165202.

It is not a de Polignac number, because 2025612561 - 2² = 2025612557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2025612551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1662456 + ... + 1663673.

It is an arithmetic number, because the mean of its divisors is an integer number (199567800).

Almost surely, 2^2025612561 is an apocalyptic number.

2025612561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2025612561 is a deficient number, since it is larger than the sum of its proper divisors (1167472239).

2025612561 is a wasteful number, since it uses less digits than its factorization.

2025612561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326168.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2025612561 is about 45006.8057186910. The cubic root of 2025612561 is about 1265.2765539699.

Adding to 2025612561 its reverse (1652165202), we get a palindrome (3677777763).

The spelling of 2025612561 in words is "two billion, twenty-five million, six hundred twelve thousand, five hundred sixty-one".