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13407400525 = 521733099977
BaseRepresentation
bin11000111110010010…
…01011001001001101
31021121101101111220211
430133021023021031
5204424243304100
610054223042421
7653151011161
oct143711131115
937541344824
1013407400525
115760145502
122722140411
1313589048bc
149128d8ca1
155370c81ba
hex31f24b24d

13407400525 has 12 divisors (see below), whose sum is σ = 16721281332. Its totient is φ = 10663917440.

The previous prime is 13407400519. The next prime is 13407400547. The reversal of 13407400525 is 52500470431.

13407400525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 310429161 + 13096971364 = 17619^2 + 114442^2 .

It is not a de Polignac number, because 13407400525 - 25 = 13407400493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1545664 + ... + 1554313.

It is an arithmetic number, because the mean of its divisors is an integer number (1393440111).

Almost surely, 213407400525 is an apocalyptic number.

It is an amenable number.

13407400525 is a deficient number, since it is larger than the sum of its proper divisors (3313880807).

13407400525 is a wasteful number, since it uses less digits than its factorization.

13407400525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100160 (or 3100155 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

Adding to 13407400525 its reverse (52500470431), we get a palindrome (65907870956).

The spelling of 13407400525 in words is "thirteen billion, four hundred seven million, four hundred thousand, five hundred twenty-five".

Divisors: 1 5 25 173 865 4325 3099977 15499885 77499425 536296021 2681480105 13407400525