1265906132 has 6 divisors (see below), whose sum is σ = 2215335738. Its totient is φ = 632953064.

The previous prime is 1265906129. The next prime is 1265906137. The reversal of 1265906132 is 2316095621.

It can be written as a sum of positive squares in only one way, i.e., 1261386256 + 4519876 = 35516^2 + 2126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1265906092 and 1265906101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265906137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158238263 + ... + 158238270.

It is an arithmetic number, because the mean of its divisors is an integer number (369222623).

Almost surely, 2^1265906132 is an apocalyptic number.

It is an amenable number.

1265906132 is a deficient number, since it is larger than the sum of its proper divisors (949429606).

1265906132 is a wasteful number, since it uses less digits than its factorization.

1265906132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316476537 (or 316476535 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1265906132 is about 35579.5746461365. The cubic root of 1265906132 is about 1081.7672631603.

The spelling of 1265906132 in words is "one billion, two hundred sixty-five million, nine hundred six thousand, one hundred thirty-two".