28613025 has 72 divisors (see below), whose sum is σ = 60275904. Its totient is φ = 12700800.

The previous prime is 28613003. The next prime is 28613027. The reversal of 28613025 is 52031682.

28613025 is a `hidden beast` number, since 28 + 613 + 0 + 25 = 666.

It is not a de Polignac number, because 28613025 - 2¹² = 28608929 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28613025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28613027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 58030 + ... + 58520.

Almost surely, 2^28613025 is an apocalyptic number.

28613025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28613025 is an abundant number, since it is smaller than the sum of its proper divisors (31662879).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28613025 is a wasteful number, since it uses less digits than its factorization.

28613025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28613025 is about 5349.1144126855. The cubic root of 28613025 is about 305.8589956531.

It can be divided in two parts, 2861 and 3025, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 28613025 in words is "twenty-eight million, six hundred thirteen thousand, twenty-five".