28411025 has 18 divisors (see below), whose sum is σ = 35943570. Its totient is φ = 22274560.

The previous prime is 28411013. The next prime is 28411051. The reversal of 28411025 is 52011482.

It can be written as a sum of positive squares in 9 ways, for example, as 27081616 + 1329409 = 5204^2 + 1153^2 .

It is not a de Polignac number, because 28411025 - 2⁸ = 28410769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 251369 + ... + 251481.

It is an arithmetic number, because the mean of its divisors is an integer number (1996865).

Almost surely, 2^28411025 is an apocalyptic number.

28411025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28411025 is a deficient number, since it is larger than the sum of its proper divisors (7532545).

28411025 is an equidigital number, since it uses as much as digits as its factorization.

28411025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28411025 is about 5330.1993396120. The cubic root of 28411025 is about 305.1375353911.

The spelling of 28411025 in words is "twenty-eight million, four hundred eleven thousand, twenty-five".