2725016621 has 2 divisors, whose sum is σ = 2725016622. Its totient is φ = 2725016620.

The previous prime is 2725016617. The next prime is 2725016699. The reversal of 2725016621 is 1266105272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2710347721 + 14668900 = 52061^2 + 3830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725016621 - 2² = 2725016617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2725016221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362508310 + 1362508311.

It is an arithmetic number, because the mean of its divisors is an integer number (1362508311).

Almost surely, 2^2725016621 is an apocalyptic number.

It is an amenable number.

2725016621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725016621 is an equidigital number, since it uses as much as digits as its factorization.

2725016621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2725016621 is about 52201.6917446169. The cubic root of 2725016621 is about 1396.7640604429.

The spelling of 2725016621 in words is "two billion, seven hundred twenty-five million, sixteen thousand, six hundred twenty-one".