28041177025 has 27 divisors (see below), whose sum is σ = 35211555561. Its totient is φ = 22152287040.

The previous prime is 28041177023. The next prime is 28041177041. The reversal of 28041177025 is 52077114082.

The square root of 28041177025 is 167455.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 15753011121 + 12288165904 = 125511^2 + 110852^2 .

It is not a de Polignac number, because 28041177025 - 2¹ = 28041177023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28041177023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 89588269 + ... + 89588581.

Almost surely, 2^28041177025 is an apocalyptic number.

28041177025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28041177025 is the 167455-th square number.

28041177025 is the 83728-th centered octagonal number.

It is an amenable number.

28041177025 is a deficient number, since it is larger than the sum of its proper divisors (7170378536).

28041177025 is an frugal number, since it uses more digits than its factorization.

28041177025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 28041177025 in words is "twenty-eight billion, forty-one million, one hundred seventy-seven thousand, twenty-five".