Search a number
-
+
30025500257 = 472514615521
BaseRepresentation
bin11011111101101010…
…001100011001100001
32212111112021110011002
4123331222030121201
5442443012002012
621443222401345
72112026353424
oct337552143141
985445243132
1030025500257
1111808680825
12599b590255
132aa6752bcc
14164b9a59bb
15baaeb47c2
hex6fda8c661

30025500257 has 16 divisors (see below), whose sum is σ = 30858879744. Its totient is φ = 29200800000.

The previous prime is 30025500223. The next prime is 30025500313. The reversal of 30025500257 is 75200552003.

It is a cyclic number.

It is not a de Polignac number, because 30025500257 - 216 = 30025434721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30025509257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5435657 + ... + 5441177.

It is an arithmetic number, because the mean of its divisors is an integer number (1928679984).

Almost surely, 230025500257 is an apocalyptic number.

It is an amenable number.

30025500257 is a deficient number, since it is larger than the sum of its proper divisors (833379487).

30025500257 is a wasteful number, since it uses less digits than its factorization.

30025500257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280.

The product of its (nonzero) digits is 10500, while the sum is 29.

The spelling of 30025500257 in words is "thirty billion, twenty-five million, five hundred thousand, two hundred fifty-seven".

Divisors: 1 47 251 461 5521 11797 21667 115711 259487 1385771 2545181 5438417 65131237 119623507 638840431 30025500257