2895625721 has 2 divisors, whose sum is σ = 2895625722. Its totient is φ = 2895625720.

The previous prime is 2895625699. The next prime is 2895625723. The reversal of 2895625721 is 1275265982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1609614400 + 1286011321 = 40120^2 + 35861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2895625721 - 2¹⁸ = 2895363577 is a prime.

It is a super-2 number, since 2×2895625721² = 16769296632233539682, which contains 22 as substring.

Together with 2895625723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2895625723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1447812860 + 1447812861.

It is an arithmetic number, because the mean of its divisors is an integer number (1447812861).

Almost surely, 2^2895625721 is an apocalyptic number.

It is an amenable number.

2895625721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2895625721 is an equidigital number, since it uses as much as digits as its factorization.

2895625721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 2895625721 is about 53811.0185835578. The cubic root of 2895625721 is about 1425.3257851210.

The spelling of 2895625721 in words is "two billion, eight hundred ninety-five million, six hundred twenty-five thousand, seven hundred twenty-one".