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30856015025 = 5211929120779
BaseRepresentation
bin11100101111001010…
…010110110010110001
32221122102000222020022
4130233022112302301
51001143114440100
622101451253225
72141432541323
oct345712266261
987572028208
1030856015025
11120a4463870
125b9174a215
132ba982b174
1416c9dd5613
15c08d67e85
hex72f296cb1

30856015025 has 24 divisors (see below), whose sum is σ = 41785048800. Its totient is φ = 22416396800.

The previous prime is 30856015007. The next prime is 30856015049. The reversal of 30856015025 is 52051065803.

It is not a de Polignac number, because 30856015025 - 26 = 30856014961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195086 + ... + 315864.

It is an arithmetic number, because the mean of its divisors is an integer number (1741043700).

Almost surely, 230856015025 is an apocalyptic number.

It is an amenable number.

30856015025 is a deficient number, since it is larger than the sum of its proper divisors (10929033775).

30856015025 is a wasteful number, since it uses less digits than its factorization.

30856015025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121729 (or 121724 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 30856015025 in words is "thirty billion, eight hundred fifty-six million, fifteen thousand, twenty-five".

Divisors: 1 5 11 25 55 275 929 4645 10219 23225 51095 120779 255475 603895 1328569 3019475 6642845 33214225 112203691 561018455 1234240601 2805092275 6171203005 30856015025