265406120145401 has 2 divisors, whose sum is σ = 265406120145402. Its totient is φ = 265406120145400.

The previous prime is 265406120145391. The next prime is 265406120145511. The reversal of 265406120145401 is 104541021604562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196175067075001 + 69231053070400 = 14006251^2 + 8320520^2 .

It is a cyclic number.

It is not a de Polignac number, because 265406120145401 - 2¹⁰ = 265406120144377 is a prime.

It is a super-2 number, since 2×265406120145401² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265406320145401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132703060072700 + 132703060072701.

It is an arithmetic number, because the mean of its divisors is an integer number (132703060072701).

Almost surely, 2^{265406120145401} is an apocalyptic number.

It is an amenable number.

265406120145401 is a deficient number, since it is larger than the sum of its proper divisors (1).

265406120145401 is an equidigital number, since it uses as much as digits as its factorization.

265406120145401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 265406120145401 its reverse (104541021604562), we get a palindrome (369947141749963).

The spelling of 265406120145401 in words is "two hundred sixty-five trillion, four hundred six billion, one hundred twenty million, one hundred forty-five thousand, four hundred one".