1256773132 has 6 divisors (see below), whose sum is σ = 2199352988. Its totient is φ = 628386564.

The previous prime is 1256773103. The next prime is 1256773163. The reversal of 1256773132 is 2313776521.

It is a junction number, because it is equal to n+sod(n) for n = 1256773091 and 1256773100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157096638 + ... + 157096645.

Almost surely, 2^1256773132 is an apocalyptic number.

It is an amenable number.

1256773132 is a deficient number, since it is larger than the sum of its proper divisors (942579856).

1256773132 is a wasteful number, since it uses less digits than its factorization.

1256773132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314193287 (or 314193285 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 1256773132 is about 35450.9962060307. The cubic root of 1256773132 is about 1079.1594774819.

It can be divided in two parts, 1256773 and 132, that added together give a triangular number (1256905 = T₁₅₈₅).

The spelling of 1256773132 in words is "one billion, two hundred fifty-six million, seven hundred seventy-three thousand, one hundred thirty-two".