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15085025 = 52603401
BaseRepresentation
bin111001100010…
…110111100001
31001101101202122
4321202313201
512330210100
61255154025
7242135444
oct71426741
931341678
1015085025
11857366a
125075915
133182267
14200965b
1514ce985
hexe62de1

15085025 has 6 divisors (see below), whose sum is σ = 18705462. Its totient is φ = 12068000.

The previous prime is 15085013. The next prime is 15085027. The reversal of 15085025 is 52058051.

It can be written as a sum of positive squares in 3 ways, for example, as 4787344 + 10297681 = 2188^2 + 3209^2 .

It is not a de Polignac number, because 15085025 - 24 = 15085009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15084985 and 15085003.

It is not an unprimeable number, because it can be changed into a prime (15085027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 301676 + ... + 301725.

It is an arithmetic number, because the mean of its divisors is an integer number (3117577).

Almost surely, 215085025 is an apocalyptic number.

It is an amenable number.

15085025 is a deficient number, since it is larger than the sum of its proper divisors (3620437).

15085025 is an equidigital number, since it uses as much as digits as its factorization.

15085025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603411 (or 603406 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 15085025 is about 3883.9445155666. The cubic root of 15085025 is about 247.0863068277.

The spelling of 15085025 in words is "fifteen million, eighty-five thousand, twenty-five".

Divisors: 1 5 25 603401 3017005 15085025