265100401 has 4 divisors (see below), whose sum is σ = 265428900. Its totient is φ = 264771904.

The previous prime is 265100389. The next prime is 265100411. The reversal of 265100401 is 104001562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235929600 + 29170801 = 15360^2 + 5401^2 .

It is a cyclic number.

It is not a de Polignac number, because 265100401 - 2¹⁵ = 265067633 is a prime.

It is a super-2 number, since 2×265100401² = 140556445220721602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265100411) 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, 163036 + ... + 164653.

It is an arithmetic number, because the mean of its divisors is an integer number (66357225).

Almost surely, 2^265100401 is an apocalyptic number.

It is an amenable number.

265100401 is a deficient number, since it is larger than the sum of its proper divisors (328499).

265100401 is an equidigital number, since it uses as much as digits as its factorization.

265100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328498.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 265100401 is about 16281.9040962659. The cubic root of 265100401 is about 642.3969370435.

Adding to 265100401 its reverse (104001562), we get a palindrome (369101963).

The spelling of 265100401 in words is "two hundred sixty-five million, one hundred thousand, four hundred one".