210025997 has 2 divisors, whose sum is σ = 210025998. Its totient is φ = 210025996.

The previous prime is 210025969. The next prime is 210026009. The reversal of 210025997 is 799520012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205234276 + 4791721 = 14326^2 + 2189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210025997 is a prime.

It is a super-2 number, since 2×210025997² = 88221838831688018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210025097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105012998 + 105012999.

It is an arithmetic number, because the mean of its divisors is an integer number (105012999).

Almost surely, 2^210025997 is an apocalyptic number.

It is an amenable number.

210025997 is a deficient number, since it is larger than the sum of its proper divisors (1).

210025997 is an equidigital number, since it uses as much as digits as its factorization.

210025997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 210025997 is about 14492.2737001480. The cubic root of 210025997 is about 594.4167219054.

The spelling of 210025997 in words is "two hundred ten million, twenty-five thousand, nine hundred ninety-seven".