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25030660 = 2251251533
BaseRepresentation
bin101111101111…
…1000000000100
31202002200121111
41133133000010
522401440120
62252254404
7422520454
oct137370004
952080544
1025030660
11131469a6
128471404
135255155
143477d64
1522e675a
hex17df004

25030660 has 12 divisors (see below), whose sum is σ = 52564428. Its totient is φ = 10012256.

The previous prime is 25030639. The next prime is 25030661. The reversal of 25030660 is 6603052.

It can be written as a sum of positive squares in 2 ways, for example, as 18870336 + 6160324 = 4344^2 + 2482^2 .

It is not an unprimeable number, because it can be changed into a prime (25030661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625747 + ... + 625786.

It is an arithmetic number, because the mean of its divisors is an integer number (4380369).

Almost surely, 225030660 is an apocalyptic number.

25030660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25030660 is an abundant number, since it is smaller than the sum of its proper divisors (27533768).

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

25030660 is a wasteful number, since it uses less digits than its factorization.

25030660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251542 (or 1251540 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 25030660 is about 5003.0650605404. The cubic root of 25030660 is about 292.5212588343.

The spelling of 25030660 in words is "twenty-five million, thirty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 1251533 2503066 5006132 6257665 12515330 25030660