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2111113125 = 34541117223
BaseRepresentation
bin111110111010101…
…0000011110100101
312110010102122210000
41331311100132211
513310421110000
6545252251513
7103213110522
oct17565203645
95403378700
102111113125
119937395a0
124ab010b99
132784ac284
14160540149
15c5510000
hex7dd507a5

2111113125 has 200 divisors, whose sum is σ = 4572336384. Its totient is φ = 959040000.

The previous prime is 2111113111. The next prime is 2111113127. The reversal of 2111113125 is 5213111112.

It is not a de Polignac number, because 2111113125 - 28 = 2111112869 is a prime.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 2111113098 and 2111113107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111113127) by changing a digit.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 9466764 + ... + 9466986.

Almost surely, 22111113125 is an apocalyptic number.

2111113125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111113125 is an abundant number, since it is smaller than the sum of its proper divisors (2461223259).

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

2111113125 is a wasteful number, since it uses less digits than its factorization.

2111113125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 259 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 2111113125 is about 45946.8510890572. The cubic root of 2111113125 is about 1282.8341183441.

Adding to 2111113125 its reverse (5213111112), we get a palindrome (7324224237).

The spelling of 2111113125 in words is "two billion, one hundred eleven million, one hundred thirteen thousand, one hundred twenty-five".