1268615250 has 128 divisors (see below), whose sum is σ = 4021056000. Its totient is φ = 289958400.

The previous prime is 1268615239. The next prime is 1268615267. The reversal of 1268615250 is 525168621.

1268615250 is a `hidden beast` number, since 12 + 6 + 8 + 615 + 25 + 0 = 666.

It is a congruent number.

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, 33826 + ... + 60674.

It is an arithmetic number, because the mean of its divisors is an integer number (31414500).

Almost surely, 2^1268615250 is an apocalyptic number.

1268615250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268615250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010528000).

1268615250 is an abundant number, since it is smaller than the sum of its proper divisors (2752440750).

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

1268615250 is a wasteful number, since it uses less digits than its factorization.

1268615250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26882 (or 26866 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1268615250 is about 35617.6255525267. The cubic root of 1268615250 is about 1082.5383964463.

The spelling of 1268615250 in words is "one billion, two hundred sixty-eight million, six hundred fifteen thousand, two hundred fifty".