2054221525 has 12 divisors (see below), whose sum is σ = 2635071300. Its totient is φ = 1586708480.

The previous prime is 2054221523. The next prime is 2054221529. The reversal of 2054221525 is 5251224502.

It can be written as a sum of positive squares in 6 ways, for example, as 149597361 + 1904624164 = 12231^2 + 43642^2 .

It is not a de Polignac number, because 2054221525 - 2¹ = 2054221523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2054221493 and 2054221502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054221523) 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 11 ways as a sum of consecutive naturals, for example, 1415980 + ... + 1417429.

It is an arithmetic number, because the mean of its divisors is an integer number (219589275).

Almost surely, 2^2054221525 is an apocalyptic number.

2054221525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2054221525 is a deficient number, since it is larger than the sum of its proper divisors (580849775).

2054221525 is a wasteful number, since it uses less digits than its factorization.

2054221525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833448 (or 2833443 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2054221525 is about 45323.5206598075. The cubic root of 2054221525 is about 1271.2054863014.

The spelling of 2054221525 in words is "two billion, fifty-four million, two hundred twenty-one thousand, five hundred twenty-five".