2025225421 has 4 divisors (see below), whose sum is σ = 2025347452. Its totient is φ = 2025103392.

The previous prime is 2025225403. The next prime is 2025225457. The reversal of 2025225421 is 1245225202.

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 458174025 + 1567051396 = 21405^2 + 39586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025225421 - 2²¹ = 2023128269 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 (2025225221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31296 + ... + 70921.

It is an arithmetic number, because the mean of its divisors is an integer number (506336863).

Almost surely, 2^2025225421 is an apocalyptic number.

It is an amenable number.

2025225421 is a deficient number, since it is larger than the sum of its proper divisors (122031).

2025225421 is a wasteful number, since it uses less digits than its factorization.

2025225421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122030.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2025225421 is about 45002.5046080771. The cubic root of 2025225421 is about 1265.1959412564.

The spelling of 2025225421 in words is "two billion, twenty-five million, two hundred twenty-five thousand, four hundred twenty-one".