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1010025305 = 5202005061
BaseRepresentation
bin111100001100111…
…100001101011001
32121101112121020122
4330030330031121
54032031302210
6244120203025
734013034122
oct7414741531
92541477218
101010025305
11479150a63
12242309475
1313133a413
14981db049
155da11b55
hex3c33c359

1010025305 has 4 divisors (see below), whose sum is σ = 1212030372. Its totient is φ = 808020240.

The previous prime is 1010025287. The next prime is 1010025337. The reversal of 1010025305 is 5035200101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5035200101 = 41263122027.

It can be written as a sum of positive squares in 2 ways, for example, as 583850569 + 426174736 = 24163^2 + 20644^2 .

It is not a de Polignac number, because 1010025305 - 26 = 1010025241 is a prime.

It is a super-2 number, since 2×10100253052 = 2040302233480686050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101002526 + ... + 101002535.

It is an arithmetic number, because the mean of its divisors is an integer number (303007593).

Almost surely, 21010025305 is an apocalyptic number.

It is an amenable number.

1010025305 is a deficient number, since it is larger than the sum of its proper divisors (202005067).

1010025305 is an equidigital number, since it uses as much as digits as its factorization.

1010025305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202005066.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1010025305 is about 31780.8952831729. The cubic root of 1010025305 is about 1003.3306627033.

Adding to 1010025305 its reverse (5035200101), we get a palindrome (6045225406).

The spelling of 1010025305 in words is "one billion, ten million, twenty-five thousand, three hundred five".

Divisors: 1 5 202005061 1010025305