16265257 has 4 divisors (see below), whose sum is σ = 16307460. Its totient is φ = 16223056.

The previous prime is 16265239. The next prime is 16265269. The reversal of 16265257 is 75256261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75256261 = 37 ⋅2033953.

It can be written as a sum of positive squares in 2 ways, for example, as 2752281 + 13512976 = 1659^2 + 3676^2 .

It is a cyclic number.

It is not a de Polignac number, because 16265257 - 2⁷ = 16265129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16268257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20518 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (4076865).

Almost surely, 2^16265257 is an apocalyptic number.

It is an amenable number.

16265257 is a deficient number, since it is larger than the sum of its proper divisors (42203).

16265257 is an equidigital number, since it uses as much as digits as its factorization.

16265257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42202.

The product of its digits is 25200, while the sum is 34.

The square root of 16265257 is about 4033.0208281138. The cubic root of 16265257 is about 253.3690967900.

The spelling of 16265257 in words is "sixteen million, two hundred sixty-five thousand, two hundred fifty-seven".