1266594252 has 48 divisors (see below), whose sum is σ = 3684640512. Its totient is φ = 328985280.

The previous prime is 1266594247. The next prime is 1266594257. The reversal of 1266594252 is 2524956621.

It is an interprime number because it is at equal distance from previous prime (1266594247) and next prime (1266594257).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1266594257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684463 + ... + 686310.

It is an arithmetic number, because the mean of its divisors is an integer number (76763344).

Almost surely, 2^1266594252 is an apocalyptic number.

1266594252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266594252 is an abundant number, since it is smaller than the sum of its proper divisors (2418046260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266594252 is a wasteful number, since it uses less digits than its factorization.

1266594252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370798 (or 1370796 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 1266594252 is about 35589.2434873235. The cubic root of 1266594252 is about 1081.9632363144.

The spelling of 1266594252 in words is "one billion, two hundred sixty-six million, five hundred ninety-four thousand, two hundred fifty-two".