2021250425 has 6 divisors (see below), whose sum is σ = 2506350558. Its totient is φ = 1617000320.

The previous prime is 2021250403. The next prime is 2021250443. The reversal of 2021250425 is 5240521202.

It can be written as a sum of positive squares in 3 ways, for example, as 26020201 + 1995230224 = 5101^2 + 44668^2 .

It is not a de Polignac number, because 2021250425 - 2⁸ = 2021250169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021250425.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 40424984 + ... + 40425033.

It is an arithmetic number, because the mean of its divisors is an integer number (417725093).

Almost surely, 2^2021250425 is an apocalyptic number.

2021250425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021250425 is a deficient number, since it is larger than the sum of its proper divisors (485100133).

2021250425 is an equidigital number, since it uses as much as digits as its factorization.

2021250425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80850027 (or 80850022 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2021250425 is about 44958.3187519284. The cubic root of 2021250425 is about 1264.3676478306.

Adding to 2021250425 its reverse (5240521202), we get a palindrome (7261771627).

The spelling of 2021250425 in words is "two billion, twenty-one million, two hundred fifty thousand, four hundred twenty-five".