1285145562 has 32 divisors (see below), whose sum is σ = 2700086400. Its totient is φ = 407000000.

The previous prime is 1285145557. The next prime is 1285145569. The reversal of 1285145562 is 2655415821.

1285145562 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1285145562.

It is not an unprimeable number, because it can be changed into a prime (1285145569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10689 + ... + 51812.

It is an arithmetic number, because the mean of its divisors is an integer number (84377700).

Almost surely, 2^1285145562 is an apocalyptic number.

1285145562 is an abundant number, since it is smaller than the sum of its proper divisors (1414940838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285145562 is a wasteful number, since it uses less digits than its factorization.

1285145562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62678.

The product of its digits is 96000, while the sum is 39.

The square root of 1285145562 is about 35848.9269295470. The cubic root of 1285145562 is about 1087.2200185038.

The spelling of 1285145562 in words is "one billion, two hundred eighty-five million, one hundred forty-five thousand, five hundred sixty-two".