1256265626 has 80 divisors (see below), whose sum is σ = 2541067200. Its totient is φ = 460333440.

The previous prime is 1256265599. The next prime is 1256265641. The reversal of 1256265626 is 6265626521.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 897275 + ... + 898673.

It is an arithmetic number, because the mean of its divisors is an integer number (31763340).

Almost surely, 2^1256265626 is an apocalyptic number.

1256265626 is an abundant number, since it is smaller than the sum of its proper divisors (1284801574).

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

1256265626 is a wasteful number, since it uses less digits than its factorization.

1256265626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1436 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 1256265626 is about 35443.8376308210. The cubic root of 1256265626 is about 1079.0141970456.

The spelling of 1256265626 in words is "one billion, two hundred fifty-six million, two hundred sixty-five thousand, six hundred twenty-six".