16250013 has 12 divisors (see below), whose sum is σ = 25277980. Its totient is φ = 9999936.

The previous prime is 16250009. The next prime is 16250023. The reversal of 16250013 is 31005261.

16250013 is a `hidden beast` number, since 162 + 500 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 15539364 = 843^2 + 3942^2 .

It is not a de Polignac number, because 16250013 - 2² = 16250009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16250023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69328 + ... + 69561.

Almost surely, 2^16250013 is an apocalyptic number.

16250013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16250013 is a deficient number, since it is larger than the sum of its proper divisors (9027967).

16250013 is a wasteful number, since it uses less digits than its factorization.

16250013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138908 (or 138905 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 16250013 is about 4031.1304866005. The cubic root of 16250013 is about 253.2899184990.

Adding to 16250013 its reverse (31005261), we get a palindrome (47255274).

It can be divided in two parts, 1625001 and 3, that multiplied together give a triangular number (4875003 = T₃₁₂₂).

The spelling of 16250013 in words is "sixteen million, two hundred fifty thousand, thirteen".