1266252604 has 6 divisors (see below), whose sum is σ = 2215942064. Its totient is φ = 633126300.

The previous prime is 1266252601. The next prime is 1266252641. The reversal of 1266252604 is 4062526621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266252604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266252601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158281572 + ... + 158281579.

Almost surely, 2^1266252604 is an apocalyptic number.

It is an amenable number.

1266252604 is a deficient number, since it is larger than the sum of its proper divisors (949689460).

1266252604 is a wasteful number, since it uses less digits than its factorization.

1266252604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316563155 (or 316563153 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1266252604 is about 35584.4432863576. The cubic root of 1266252604 is about 1081.8659455374.

The spelling of 1266252604 in words is "one billion, two hundred sixty-six million, two hundred fifty-two thousand, six hundred four".