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25084830 = 235836161
BaseRepresentation
bin101111110110…
…0001110011110
31202012102220210
41133230032132
522410203310
62253353250
7423134421
oct137541636
952172823
1025084830
1113183671
128498826
1352739c4
14348d9b8
152307820
hex17ec39e

25084830 has 16 divisors (see below), whose sum is σ = 60203664. Its totient is φ = 6689280.

The previous prime is 25084819. The next prime is 25084849. The reversal of 25084830 is 3848052.

It is a super-2 number, since 2×250848302 = 1258497392257800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 836161 = 25084830 / (2 + 5 + 0 + 8 + 4 + 8 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418051 + ... + 418110.

It is an arithmetic number, because the mean of its divisors is an integer number (3762729).

Almost surely, 225084830 is an apocalyptic number.

25084830 is an abundant number, since it is smaller than the sum of its proper divisors (35118834).

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

25084830 is a wasteful number, since it uses less digits than its factorization.

25084830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836171.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 25084830 is about 5008.4758160542. The cubic root of 25084830 is about 292.7321263515.

The spelling of 25084830 in words is "twenty-five million, eighty-four thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 836161 1672322 2508483 4180805 5016966 8361610 12542415 25084830