2820408756725 has 12 divisors (see below), whose sum is σ = 3996922124064. Its totient is φ = 1933994575920.

The previous prime is 2820408756707. The next prime is 2820408756833. The reversal of 2820408756725 is 5276578040282.

It is not a de Polignac number, because 2820408756725 - 2¹⁶ = 2820408691189 is a prime.

It is a super-2 number, since 2×2820408756725² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8058310559 + ... + 8058310908.

It is an arithmetic number, because the mean of its divisors is an integer number (333076843672).

Almost surely, 2^{2820408756725} is an apocalyptic number.

2820408756725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2820408756725 is a deficient number, since it is larger than the sum of its proper divisors (1176513367339).

2820408756725 is a wasteful number, since it uses less digits than its factorization.

2820408756725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16116621484 (or 16116621479 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 2820408756725 in words is "two trillion, eight hundred twenty billion, four hundred eight million, seven hundred fifty-six thousand, seven hundred twenty-five".