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13001424325 = 521277407249
BaseRepresentation
bin11000001101111000…
…11111110111000101
31020120002110210021021
430012330133313011
5203111331034300
65550041351141
7640121166121
oct140674376705
936502423237
1013001424325
115571a6858a
12262a1984b1
1312c27800b6
148b4a1a581
15511633d1a
hex306f1fdc5

13001424325 has 12 divisors (see below), whose sum is σ = 16134430500. Its totient is φ = 10392968960.

The previous prime is 13001424323. The next prime is 13001424343. The reversal of 13001424325 is 52342410031.

It can be written as a sum of positive squares in 6 ways, for example, as 600152004 + 12401272321 = 24498^2 + 111361^2 .

It is not a de Polignac number, because 13001424325 - 21 = 13001424323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13001424325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001424323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171700 + ... + 235549.

It is an arithmetic number, because the mean of its divisors is an integer number (1344535875).

Almost surely, 213001424325 is an apocalyptic number.

It is an amenable number.

13001424325 is a deficient number, since it is larger than the sum of its proper divisors (3133006175).

13001424325 is a wasteful number, since it uses less digits than its factorization.

13001424325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408536 (or 408531 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 13001424325 its reverse (52342410031), we get a palindrome (65343834356).

The spelling of 13001424325 in words is "thirteen billion, one million, four hundred twenty-four thousand, three hundred twenty-five".

Divisors: 1 5 25 1277 6385 31925 407249 2036245 10181225 520056973 2600284865 13001424325