1256164052 has 24 divisors (see below), whose sum is σ = 2582604192. Its totient is φ = 527061600.

The previous prime is 1256164037. The next prime is 1256164061. The reversal of 1256164052 is 2504616521.

It is a super-3 number, since 3×1256164052³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097474 + ... + 1098617.

It is an arithmetic number, because the mean of its divisors is an integer number (107608508).

Almost surely, 2^1256164052 is an apocalyptic number.

It is an amenable number.

1256164052 is an abundant number, since it is smaller than the sum of its proper divisors (1326440140).

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

1256164052 is a wasteful number, since it uses less digits than its factorization.

1256164052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196119 (or 2196117 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1256164052 is about 35442.4047152560. The cubic root of 1256164052 is about 1078.9851154194.

The spelling of 1256164052 in words is "one billion, two hundred fifty-six million, one hundred sixty-four thousand, fifty-two".