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2111110025 = 52269331357
BaseRepresentation
bin111110111010100…
…1111101110001001
312110010102111112012
41331311033232021
513310421010100
6545252225305
7103213065503
oct17565175611
95403374465
102111110025
11993737232
124ab00b235
132784aaa3b
1416053cd73
15c550e135
hex7dd4fb89

2111110025 has 12 divisors (see below), whose sum is σ = 2618832012. Its totient is φ = 1688207040.

The previous prime is 2111110019. The next prime is 2111110033. The reversal of 2111110025 is 5200111112.

It can be written as a sum of positive squares in 6 ways, for example, as 6869641 + 2104240384 = 2621^2 + 45872^2 .

It is not a de Polignac number, because 2111110025 - 26 = 2111109961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111109991 and 2111110009.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51647 + ... + 83003.

It is an arithmetic number, because the mean of its divisors is an integer number (218236001).

Almost surely, 22111110025 is an apocalyptic number.

2111110025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111110025 is a deficient number, since it is larger than the sum of its proper divisors (507721987).

2111110025 is a wasteful number, since it uses less digits than its factorization.

2111110025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34060 (or 34055 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 2111110025 is about 45946.8173544153. The cubic root of 2111110025 is about 1282.8334904308.

Adding to 2111110025 its reverse (5200111112), we get a palindrome (7311221137).

The spelling of 2111110025 in words is "two billion, one hundred eleven million, one hundred ten thousand, twenty-five".

Divisors: 1 5 25 2693 13465 31357 67325 156785 783925 84444401 422222005 2111110025