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10500025 = 52420001
BaseRepresentation
bin101000000011…
…011110111001
3201202110022211
4220003132321
510142000100
61013015121
7155151214
oct50033671
921673284
1010500025
115a21908
1236244a1
132238343
14157477b
15dc61ba
hexa037b9

10500025 has 6 divisors (see below), whose sum is σ = 13020062. Its totient is φ = 8400000.

The previous prime is 10500023. The next prime is 10500031. The reversal of 10500025 is 52000501.

10500025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1373584 + 9126441 = 1172^2 + 3021^2 .

It is not a de Polignac number, because 10500025 - 21 = 10500023 is a prime.

It is a super-2 number, since 2×105000252 = 220501050001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10499978 and 10500014.

It is not an unprimeable number, because it can be changed into a prime (10500023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209976 + ... + 210025.

Almost surely, 210500025 is an apocalyptic number.

It is an amenable number.

10500025 is a deficient number, since it is larger than the sum of its proper divisors (2520037).

10500025 is an equidigital number, since it uses as much as digits as its factorization.

10500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420011 (or 420006 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 10500025 is about 3240.3742067854. The cubic root of 10500025 is about 218.9761307847.

Adding to 10500025 its reverse (52000501), we get a palindrome (62500526).

The spelling of 10500025 in words is "ten million, five hundred thousand, twenty-five".

Divisors: 1 5 25 420001 2100005 10500025