3608725261 has 2 divisors, whose sum is σ = 3608725262. Its totient is φ = 3608725260.

The previous prime is 3608725259. The next prime is 3608725279. The reversal of 3608725261 is 1625278063.

3608725261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2141375625 + 1467349636 = 46275^2 + 38306^2 .

It is a cyclic number.

It is not a de Polignac number, because 3608725261 - 2¹ = 3608725259 is a prime.

Together with 3608725259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3608725061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804362630 + 1804362631.

It is an arithmetic number, because the mean of its divisors is an integer number (1804362631).

Almost surely, 2^3608725261 is an apocalyptic number.

It is an amenable number.

3608725261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3608725261 is an equidigital number, since it uses as much as digits as its factorization.

3608725261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 3608725261 is about 60072.6665048256. Note that the first 3 decimals coincide. The cubic root of 3608725261 is about 1533.8560602096.

The spelling of 3608725261 in words is "three billion, six hundred eight million, seven hundred twenty-five thousand, two hundred sixty-one".