16125749 has 2 divisors, whose sum is σ = 16125750. Its totient is φ = 16125748.

The previous prime is 16125721. The next prime is 16125757. The reversal of 16125749 is 94752161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14668900 + 1456849 = 3830^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 16125749 - 2²⁰ = 15077173 is a prime.

It is a super-2 number, since 2×16125749² = 520079561622002, 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 (16125779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8062874 + 8062875.

It is an arithmetic number, because the mean of its divisors is an integer number (8062875).

Almost surely, 2^16125749 is an apocalyptic number.

It is an amenable number.

16125749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16125749 is an equidigital number, since it uses as much as digits as its factorization.

16125749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 16125749 is about 4015.6878613757. The cubic root of 16125749 is about 252.6426289567.

The spelling of 16125749 in words is "sixteen million, one hundred twenty-five thousand, seven hundred forty-nine".