15825049 has 2 divisors, whose sum is σ = 15825050. Its totient is φ = 15825048.

The previous prime is 15825037. The next prime is 15825059. The reversal of 15825049 is 94052851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 6215049 = 3100^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 15825049 - 2⁹ = 15824537 is a prime.

It is not a weakly prime, because it can be changed into another prime (15825059) 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, 7912524 + 7912525.

It is an arithmetic number, because the mean of its divisors is an integer number (7912525).

Almost surely, 2^15825049 is an apocalyptic number.

It is an amenable number.

15825049 is a deficient number, since it is larger than the sum of its proper divisors (1).

15825049 is an equidigital number, since it uses as much as digits as its factorization.

15825049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 15825049 is about 3978.0710149518. The cubic root of 15825049 is about 251.0624067720.

The spelling of 15825049 in words is "fifteen million, eight hundred twenty-five thousand, forty-nine".