1081396125 has 24 divisors (see below), whose sum is σ = 1949398776. Its totient is φ = 576744000.

The previous prime is 1081396123. The next prime is 1081396139. The reversal of 1081396125 is 5216931801.

1081396125 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 39 + 612 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24235929 + 1057160196 = 4923^2 + 32514^2 .

It is not a de Polignac number, because 1081396125 - 2¹ = 1081396123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081396125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081396123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479496 + ... + 481745.

It is an arithmetic number, because the mean of its divisors is an integer number (81224949).

Almost surely, 2^1081396125 is an apocalyptic number.

1081396125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081396125 is a deficient number, since it is larger than the sum of its proper divisors (868002651).

1081396125 is an equidigital number, since it uses as much as digits as its factorization.

1081396125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961262 (or 961249 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1081396125 is about 32884.5879554541. The cubic root of 1081396125 is about 1026.4274776718.

The spelling of 1081396125 in words is "one billion, eighty-one million, three hundred ninety-six thousand, one hundred twenty-five".