35125721 has 2 divisors, whose sum is σ = 35125722. Its totient is φ = 35125720.

The previous prime is 35125703. The next prime is 35125763. The reversal of 35125721 is 12752153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 774400 = 5861^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 35125721 - 2¹⁰ = 35124697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (35425721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17562860 + 17562861.

It is an arithmetic number, because the mean of its divisors is an integer number (17562861).

Almost surely, 2^35125721 is an apocalyptic number.

It is an amenable number.

35125721 is a deficient number, since it is larger than the sum of its proper divisors (1).

35125721 is an equidigital number, since it uses as much as digits as its factorization.

35125721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 26.

The square root of 35125721 is about 5926.6956223515. The cubic root of 35125721 is about 327.4978217908.

Adding to 35125721 its reverse (12752153), we get a palindrome (47877874).

The spelling of 35125721 in words is "thirty-five million, one hundred twenty-five thousand, seven hundred twenty-one".