1285465546852 has 24 divisors (see below), whose sum is σ = 2288420479800. Its totient is φ = 631724025600.

The previous prime is 1285465546829. The next prime is 1285465546853. The reversal of 1285465546852 is 2586455645821.

It can be written as a sum of positive squares in 4 ways, for example, as 412541582436 + 872923964416 = 642294^2 + 934304^2 .

It is a super-2 number, since 2×1285465546852² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1285465546853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11557227 + ... + 11667922.

It is an arithmetic number, because the mean of its divisors is an integer number (95350853325).

Almost surely, 2^{1285465546852} is an apocalyptic number.

It is an amenable number.

1285465546852 is a deficient number, since it is larger than the sum of its proper divisors (1002954932948).

1285465546852 is a wasteful number, since it uses less digits than its factorization.

1285465546852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23225391 (or 23225389 counting only the distinct ones).

The product of its digits is 92160000, while the sum is 61.

The spelling of 1285465546852 in words is "one trillion, two hundred eighty-five billion, four hundred sixty-five million, five hundred forty-six thousand, eight hundred fifty-two".