2025421 has 2 divisors, whose sum is σ = 2025422. Its totient is φ = 2025420.

The previous prime is 2025409. The next prime is 2025427. The reversal of 2025421 is 1245202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 96100 = 1389^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025421 - 2⁹ = 2024909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2025395 and 2025404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2025427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012710 + 1012711.

It is an arithmetic number, because the mean of its divisors is an integer number (1012711).

2^2025421 is an apocalyptic number.

It is an amenable number.

2025421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025421 is an equidigital number, since it uses as much as digits as its factorization.

2025421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2025421 is about 1423.1728637098. The cubic root of 2025421 is about 126.5236667224.

The spelling of 2025421 in words is "two million, twenty-five thousand, four hundred twenty-one".