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78053275082525 = 5229382128175789
BaseRepresentation
bin10001101111110100110001…
…101111000001111100011101
3101020100211010221110202220112
4101233310301233001330131
540212311101410120100
6434001102441255405
722304106630260501
oct2157646157017435
9336324127422815
1078053275082525
1122963231a37386
1289072b7a94565
133472513a37422
14153bb277a6301
15905528ad0b35
hex46fd31bc1f1d

78053275082525 has 24 divisors (see below), whose sum is σ = 100149718523400. Its totient is φ = 60273645689600.

The previous prime is 78053275082491. The next prime is 78053275082567. The reversal of 78053275082525 is 52528057235087.

It can be written as a sum of positive squares in 12 ways, for example, as 257399963716 + 77795875118809 = 507346^2 + 8820197^2 .

It is not a de Polignac number, because 78053275082525 - 210 = 78053275081501 is a prime.

It is a super-2 number, since 2×780532750825252 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11317670 + ... + 16858119.

It is an arithmetic number, because the mean of its divisors is an integer number (4172904938475).

Almost surely, 278053275082525 is an apocalyptic number.

It is an amenable number.

78053275082525 is a deficient number, since it is larger than the sum of its proper divisors (22096443440875).

78053275082525 is a wasteful number, since it uses less digits than its factorization.

78053275082525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28179649 (or 28179644 counting only the distinct ones).

The product of its (nonzero) digits is 47040000, while the sum is 59.

The spelling of 78053275082525 in words is "seventy-eight trillion, fifty-three billion, two hundred seventy-five million, eighty-two thousand, five hundred twenty-five".

Divisors: 1 5 25 29 145 725 3821 19105 95525 110809 554045 2770225 28175789 140878945 704394725 817097881 4085489405 20427447025 107659689769 538298448845 2691492244225 3122131003301 15610655016505 78053275082525