2125661353 has 2 divisors, whose sum is σ = 2125661354. Its totient is φ = 2125661352.

The previous prime is 2125661273. The next prime is 2125661383. The reversal of 2125661353 is 3531665212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2031124624 + 94536729 = 45068^2 + 9723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125661353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125661383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062830676 + 1062830677.

It is an arithmetic number, because the mean of its divisors is an integer number (1062830677).

Almost surely, 2^2125661353 is an apocalyptic number.

It is an amenable number.

2125661353 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125661353 is an equidigital number, since it uses as much as digits as its factorization.

2125661353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 2125661353 is about 46104.8951088710. The cubic root of 2125661353 is about 1285.7741559887.

The spelling of 2125661353 in words is "two billion, one hundred twenty-five million, six hundred sixty-one thousand, three hundred fifty-three".