699725249 has 2 divisors, whose sum is σ = 699725250. Its totient is φ = 699725248.

The previous prime is 699725233. The next prime is 699725261. The reversal of 699725249 is 942527996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667292224 + 32433025 = 25832^2 + 5695^2 .

It is a cyclic number.

It is not a de Polignac number, because 699725249 - 2⁴ = 699725233 is a prime.

It is a super-2 number, since 2×699725249² = 979230848176224002, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 699725249.

It is not a weakly prime, because it can be changed into another prime (699722249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349862624 + 349862625.

It is an arithmetic number, because the mean of its divisors is an integer number (349862625).

Almost surely, 2^699725249 is an apocalyptic number.

It is an amenable number.

699725249 is a deficient number, since it is larger than the sum of its proper divisors (1).

699725249 is an equidigital number, since it uses as much as digits as its factorization.

699725249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 699725249 is about 26452.3202952028. The cubic root of 699725249 is about 887.7878186776.

The spelling of 699725249 in words is "six hundred ninety-nine million, seven hundred twenty-five thousand, two hundred forty-nine".