2787081125 has 16 divisors (see below), whose sum is σ = 3484047216. Its totient is φ = 2225966400.

The previous prime is 2787081119. The next prime is 2787081151. The reversal of 2787081125 is 5211807872.

It can be written as a sum of positive squares in 8 ways, for example, as 1656978436 + 1130102689 = 40706^2 + 33617^2 .

It is not a de Polignac number, because 2787081125 - 2¹⁴ = 2787064741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58439 + ... + 94811.

It is an arithmetic number, because the mean of its divisors is an integer number (217752951).

Almost surely, 2^2787081125 is an apocalyptic number.

2787081125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2787081125 is a deficient number, since it is larger than the sum of its proper divisors (696966091).

2787081125 is an equidigital number, since it uses as much as digits as its factorization.

2787081125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37001 (or 36991 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 2787081125 is about 52792.8131946006. The cubic root of 2787081125 is about 1407.2887094534.

Adding to 2787081125 its reverse (5211807872), we get a palindrome (7998888997).

The spelling of 2787081125 in words is "two billion, seven hundred eighty-seven million, eighty-one thousand, one hundred twenty-five".