1252751156 has 6 divisors (see below), whose sum is σ = 2192314530. Its totient is φ = 626375576.

The previous prime is 1252751119. The next prime is 1252751161. The reversal of 1252751156 is 6511572521.

It can be written as a sum of positive squares in only one way, i.e., 981819556 + 270931600 = 31334^2 + 16460^2 .

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 as a sum of consecutive naturals, namely, 156593891 + ... + 156593898.

It is an arithmetic number, because the mean of its divisors is an integer number (365385755).

Almost surely, 2^1252751156 is an apocalyptic number.

It is an amenable number.

1252751156 is a deficient number, since it is larger than the sum of its proper divisors (939563374).

1252751156 is a wasteful number, since it uses less digits than its factorization.

1252751156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313187793 (or 313187791 counting only the distinct ones).

The product of its digits is 21000, while the sum is 35.

The square root of 1252751156 is about 35394.2248961607. The cubic root of 1252751156 is about 1078.0070573897.

The spelling of 1252751156 in words is "one billion, two hundred fifty-two million, seven hundred fifty-one thousand, one hundred fifty-six".