1266262250 has 128 divisors (see below), whose sum is σ = 2694601728. Its totient is φ = 441600000.

The previous prime is 1266262243. The next prime is 1266262267. The reversal of 1266262250 is 522626621.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12537200 + ... + 12537300.

It is an arithmetic number, because the mean of its divisors is an integer number (21051576).

Almost surely, 2^1266262250 is an apocalyptic number.

1266262250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266262250 is an abundant number, since it is smaller than the sum of its proper divisors (1428339478).

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

1266262250 is a wasteful number, since it uses less digits than its factorization.

1266262250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1266262250 is about 35584.5788228553. The cubic root of 1266262250 is about 1081.8686926597.

Adding to 1266262250 its reverse (522626621), we get a palindrome (1788888871).

The spelling of 1266262250 in words is "one billion, two hundred sixty-six million, two hundred sixty-two thousand, two hundred fifty".