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1025513305213 = 9752871051499
BaseRepresentation
bin11101110110001010101…
…10110011010001111101
310122001000210012121200011
432323011112303101331
5113300222401231323
62103040405103221
7134043114161035
oct16730526632175
93561023177604
101025513305213
11365a10586801
121469023b7b11
1375922c65247
14378c6a4a8c5
151ba2152e20d
hexeec55b347d

1025513305213 has 4 divisors (see below), whose sum is σ = 1025515332000. Its totient is φ = 1025511278428.

The previous prime is 1025513305189. The next prime is 1025513305249. The reversal of 1025513305213 is 3125033155201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025513305213 - 213 = 1025513297021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025513365213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449538 + ... + 1501036.

It is an arithmetic number, because the mean of its divisors is an integer number (256378833000).

Almost surely, 21025513305213 is an apocalyptic number.

It is an amenable number.

1025513305213 is a deficient number, since it is larger than the sum of its proper divisors (2026787).

1025513305213 is an equidigital number, since it uses as much as digits as its factorization.

1025513305213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026786.

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 1025513305213 in words is "one trillion, twenty-five billion, five hundred thirteen million, three hundred five thousand, two hundred thirteen".

Divisors: 1 975287 1051499 1025513305213