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308002800025 = 5255722118693
BaseRepresentation
bin1000111101101100110…
…01011100000110011001
31002110000020121101120001
410132312121130012121
520021242204100100
6353254452533001
731152411414004
oct4366631340631
91073006541501
10308002800025
11109694607418
124b839621161
1323076b1233b
1410c9bd3853b
15802a05dd6a
hex47b665c199

308002800025 has 12 divisors (see below), whose sum is σ = 382609168812. Its totient is φ = 245959855040.

The previous prime is 308002800013. The next prime is 308002800151. The reversal of 308002800025 is 520008200803.

It can be written as a sum of positive squares in 6 ways, for example, as 4439449 + 307998360576 = 2107^2 + 554976^2 .

It is not a de Polignac number, because 308002800025 - 225 = 307969245593 is a prime.

It is a super-3 number, since 3×3080028000253 (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308002799966 and 308002800002.

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, 11045422 + ... + 11073271.

It is an arithmetic number, because the mean of its divisors is an integer number (31884097401).

Almost surely, 2308002800025 is an apocalyptic number.

It is an amenable number.

308002800025 is a deficient number, since it is larger than the sum of its proper divisors (74606368787).

308002800025 is a wasteful number, since it uses less digits than its factorization.

308002800025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22119260 (or 22119255 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 308002800025 in words is "three hundred eight billion, two million, eight hundred thousand, twenty-five".

Divisors: 1 5 25 557 2785 13925 22118693 110593465 552967325 12320112001 61600560005 308002800025