2025989621 has 4 divisors (see below), whose sum is σ = 2075404044. Its totient is φ = 1976575200.

The previous prime is 2025989611. The next prime is 2025989629. The reversal of 2025989621 is 1269895202.

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 903002500 + 1122987121 = 30050^2 + 33511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025989621 - 2¹⁰ = 2025988597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2025989629) 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, 24707150 + ... + 24707231.

It is an arithmetic number, because the mean of its divisors is an integer number (518851011).

Almost surely, 2^2025989621 is an apocalyptic number.

It is an amenable number.

2025989621 is a deficient number, since it is larger than the sum of its proper divisors (49414423).

2025989621 is an equidigital number, since it uses as much as digits as its factorization.

2025989621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49414422.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 2025989621 is about 45010.9944458018. The cubic root of 2025989621 is about 1265.3550578896.

The spelling of 2025989621 in words is "two billion, twenty-five million, nine hundred eighty-nine thousand, six hundred twenty-one".