1266256410 has 16 divisors (see below), whose sum is σ = 3039015456. Its totient is φ = 337668368.

The previous prime is 1266256393. The next prime is 1266256447. The reversal of 1266256410 is 146526621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21104244 + ... + 21104303.

It is an arithmetic number, because the mean of its divisors is an integer number (189938466).

Almost surely, 2^1266256410 is an apocalyptic number.

1266256410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266256410 is an abundant number, since it is smaller than the sum of its proper divisors (1772759046).

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

1266256410 is a wasteful number, since it uses less digits than its factorization.

1266256410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42208557.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1266256410 is about 35584.4967647429. The cubic root of 1266256410 is about 1081.8670294648.

The spelling of 1266256410 in words is "one billion, two hundred sixty-six million, two hundred fifty-six thousand, four hundred ten".