1025854221 has 16 divisors (see below), whose sum is σ = 1585225728. Its totient is φ = 577945200.

The previous prime is 1025854199. The next prime is 1025854231. The reversal of 1025854221 is 1224585201.

1025854221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1025854221 - 2¹⁵ = 1025821453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025854231) 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, 342525 + ... + 345506.

It is an arithmetic number, because the mean of its divisors is an integer number (99076608).

Almost surely, 2^1025854221 is an apocalyptic number.

It is an amenable number.

1025854221 is a deficient number, since it is larger than the sum of its proper divisors (559371507).

1025854221 is an equidigital number, since it uses as much as digits as its factorization.

1025854221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688112.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1025854221 is about 32028.9590995399. The cubic root of 1025854221 is about 1008.5448512184.

The spelling of 1025854221 in words is "one billion, twenty-five million, eight hundred fifty-four thousand, two hundred twenty-one".