2651725881 has 48 divisors (see below), whose sum is σ = 4504805760. Its totient is φ = 1471530240.

The previous prime is 2651725877. The next prime is 2651725883. The reversal of 2651725881 is 1885271562.

2651725881 is a `hidden beast` number, since 2 + 6 + 517 + 2 + 58 + 81 = 666.

It is not a de Polignac number, because 2651725881 - 2² = 2651725877 is a prime.

It is a super-2 number, since 2×2651725881² = 14063300295930452322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2651725883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589266 + ... + 593748.

It is an arithmetic number, because the mean of its divisors is an integer number (93850120).

Almost surely, 2^2651725881 is an apocalyptic number.

2651725881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2651725881 is a deficient number, since it is larger than the sum of its proper divisors (1853079879).

2651725881 is a wasteful number, since it uses less digits than its factorization.

2651725881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766 (or 4763 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 2651725881 is about 51494.9112146045. The cubic root of 2651725881 is about 1384.1278562606.

The spelling of 2651725881 in words is "two billion, six hundred fifty-one million, seven hundred twenty-five thousand, eight hundred eighty-one".