28458003025 has 9 divisors (see below), whose sum is σ = 35288969691. Its totient is φ = 22765727640.

The previous prime is 28458003023. The next prime is 28458003031. The reversal of 28458003025 is 52030085482.

The square root of 28458003025 is 168695.

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

It can be written as a sum of positive squares in only one way, i.e., 10244881089 + 18213121936 = 101217^2 + 134956^2 .

It is not a de Polignac number, because 28458003025 - 2¹ = 28458003023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28458003023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 826606 + ... + 860344.

Almost surely, 2^28458003025 is an apocalyptic number.

28458003025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28458003025 is the 168695-th square number.

28458003025 is the 84348-th centered octagonal number.

It is an amenable number.

28458003025 is a deficient number, since it is larger than the sum of its proper divisors (6830966666).

28458003025 is an frugal number, since it uses more digits than its factorization.

28458003025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67488 (or 33744 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 28458003025 in words is "twenty-eight billion, four hundred fifty-eight million, three thousand, twenty-five".