235725661 has 2 divisors, whose sum is σ = 235725662. Its totient is φ = 235725660.

The previous prime is 235725641. The next prime is 235725683. The reversal of 235725661 is 166527532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234273636 + 1452025 = 15306^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 235725661 - 2²¹ = 233628509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 235725661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235725641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117862830 + 117862831.

It is an arithmetic number, because the mean of its divisors is an integer number (117862831).

Almost surely, 2^235725661 is an apocalyptic number.

It is an amenable number.

235725661 is a deficient number, since it is larger than the sum of its proper divisors (1).

235725661 is an equidigital number, since it uses as much as digits as its factorization.

235725661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 235725661 is about 15353.3599254365. The cubic root of 235725661 is about 617.7351121616.

The spelling of 235725661 in words is "two hundred thirty-five million, seven hundred twenty-five thousand, six hundred sixty-one".