1285057395 has 12 divisors (see below), whose sum is σ = 2227432896. Its totient is φ = 685363920.

The previous prime is 1285057393. The next prime is 1285057399. The reversal of 1285057395 is 5937505821.

1285057395 is a `hidden beast` number, since 1 + 28 + 50 + 573 + 9 + 5 = 666.

1285057395 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1285057395 - 2¹ = 1285057393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 28556831 = 1285057395 / (1 + 2 + 8 + 5 + 0 + 5 + 7 + 3 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1285057395.

It is not an unprimeable number, because it can be changed into a prime (1285057391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14278371 + ... + 14278460.

It is an arithmetic number, because the mean of its divisors is an integer number (185619408).

Almost surely, 2^1285057395 is an apocalyptic number.

1285057395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1285057395 is a deficient number, since it is larger than the sum of its proper divisors (942375501).

1285057395 is a wasteful number, since it uses less digits than its factorization.

1285057395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28556842 (or 28556839 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 1285057395 is about 35847.6972063758. The cubic root of 1285057395 is about 1087.1951551414.

The spelling of 1285057395 in words is "one billion, two hundred eighty-five million, fifty-seven thousand, three hundred ninety-five".