1265227406 has 4 divisors (see below), whose sum is σ = 1897841112. Its totient is φ = 632613702.

The previous prime is 1265227367. The next prime is 1265227417. The reversal of 1265227406 is 6047225621.

It is a semiprime because it is the product of two primes.

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, 316306850 + ... + 316306853.

It is an arithmetic number, because the mean of its divisors is an integer number (474460278).

Almost surely, 2^1265227406 is an apocalyptic number.

1265227406 is a deficient number, since it is larger than the sum of its proper divisors (632613706).

1265227406 is an equidigital number, since it uses as much as digits as its factorization.

1265227406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632613705.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 1265227406 is about 35570.0352262969. The cubic root of 1265227406 is about 1081.5738957881.

The spelling of 1265227406 in words is "one billion, two hundred sixty-five million, two hundred twenty-seven thousand, four hundred six".