1255781732 has 6 divisors (see below), whose sum is σ = 2197618038. Its totient is φ = 627890864.

The previous prime is 1255781731. The next prime is 1255781741. The reversal of 1255781732 is 2371875521.

It can be written as a sum of positive squares in only one way, i.e., 948270436 + 307511296 = 30794^2 + 17536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1255781732.

It is not an unprimeable number, because it can be changed into a prime (1255781731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156972713 + ... + 156972720.

It is an arithmetic number, because the mean of its divisors is an integer number (366269673).

Almost surely, 2^1255781732 is an apocalyptic number.

It is an amenable number.

1255781732 is a deficient number, since it is larger than the sum of its proper divisors (941836306).

1255781732 is a wasteful number, since it uses less digits than its factorization.

1255781732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313945437 (or 313945435 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 1255781732 is about 35437.0107655824. The cubic root of 1255781732 is about 1078.8756394194.

The spelling of 1255781732 in words is "one billion, two hundred fifty-five million, seven hundred eighty-one thousand, seven hundred thirty-two".