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12575603881 = 12728832
BaseRepresentation
bin10111011011001000…
…00111110010101001
31012110102012212102201
423231210013302221
5201223323311011
65435510500201
7623430604111
oct135544076251
935412185381
1012575603881
115373667365
12252b664661
13125549b039
14874254041
154d906ecc1
hex2ed907ca9

12575603881 has 9 divisors (see below), whose sum is σ = 12689775261. Its totient is φ = 12462453612.

The previous prime is 12575603869. The next prime is 12575603893. The reversal of 12575603881 is 18830657521.

The square root of 12575603881 is 112141.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (12575603869) and next prime (12575603893).

It is not a de Polignac number, because 12575603881 - 25 = 12575603849 is a prime.

It is a super-2 number, since 2×125756038812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12575603801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14241466 + ... + 14242348.

It is an arithmetic number, because the mean of its divisors is an integer number (1409975029).

Almost surely, 212575603881 is an apocalyptic number.

12575603881 is the 112141-st square number.

12575603881 is the 56071-st centered octagonal number.

It is an amenable number.

12575603881 is a deficient number, since it is larger than the sum of its proper divisors (114171380).

12575603881 is an frugal number, since it uses more digits than its factorization.

12575603881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 12575603881 in words is "twelve billion, five hundred seventy-five million, six hundred three thousand, eight hundred eighty-one".

Divisors: 1 127 883 16129 112141 779689 14241907 99020503 12575603881