1266725370 has 32 divisors (see below), whose sum is σ = 3056071680. Its totient is φ = 336023360.

The previous prime is 1266725279. The next prime is 1266725401. The reversal of 1266725370 is 735276621.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104805 + ... + 116264.

It is an arithmetic number, because the mean of its divisors is an integer number (95502240).

Almost surely, 2^1266725370 is an apocalyptic number.

1266725370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266725370 is an abundant number, since it is smaller than the sum of its proper divisors (1789346310).

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

1266725370 is a wasteful number, since it uses less digits than its factorization.

1266725370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221270.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 1266725370 is about 35591.0855411857. The cubic root of 1266725370 is about 1082.0005700173. Note that the first 3 decimals are identical.

The spelling of 1266725370 in words is "one billion, two hundred sixty-six million, seven hundred twenty-five thousand, three hundred seventy".