1252172256 has 48 divisors (see below), whose sum is σ = 3429869184. Its totient is φ = 399242624.

The previous prime is 1252172221. The next prime is 1252172297. The reversal of 1252172256 is 6522712521.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1252172256² = 3135870717392259072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281346 + ... + 285761.

It is an arithmetic number, because the mean of its divisors is an integer number (71455608).

Almost surely, 2^1252172256 is an apocalyptic number.

1252172256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1252172256 is an abundant number, since it is smaller than the sum of its proper divisors (2177696928).

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

1252172256 is a wasteful number, since it uses less digits than its factorization.

1252172256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567143 (or 567135 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 1252172256 is about 35386.0460633849. The cubic root of 1252172256 is about 1077.8409817266.

Adding to 1252172256 its reverse (6522712521), we get a palindrome (7774884777).

The spelling of 1252172256 in words is "one billion, two hundred fifty-two million, one hundred seventy-two thousand, two hundred fifty-six".