1256051070 has 64 divisors (see below), whose sum is σ = 3427395840. Its totient is φ = 327154464.

The previous prime is 1256051063. The next prime is 1256051089. The reversal of 1256051070 is 701506521.

1256051070 is a `hidden beast` number, since 1 + 25 + 60 + 510 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42484 + ... + 65703.

It is an arithmetic number, because the mean of its divisors is an integer number (53553060).

Almost surely, 2^1256051070 is an apocalyptic number.

1256051070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256051070 is an abundant number, since it is smaller than the sum of its proper divisors (2171344770).

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

1256051070 is a wasteful number, since it uses less digits than its factorization.

1256051070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108246 (or 108240 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1256051070 is about 35440.8107977230. The cubic root of 1256051070 is about 1078.9527657298.

Adding to 1256051070 its reverse (701506521), we get a palindrome (1957557591).

The spelling of 1256051070 in words is "one billion, two hundred fifty-six million, fifty-one thousand, seventy".