265220456201 has 4 divisors (see below), whose sum is σ = 279179427600. Its totient is φ = 251261484804.

The previous prime is 265220456131. The next prime is 265220456269. The reversal of 265220456201 is 102654022562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265220456201 - 2¹⁰ = 265220455177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265220456701) 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, 6979485671 + ... + 6979485708.

It is an arithmetic number, because the mean of its divisors is an integer number (69794856900).

Almost surely, 2^265220456201 is an apocalyptic number.

It is an amenable number.

265220456201 is a deficient number, since it is larger than the sum of its proper divisors (13958971399).

265220456201 is a wasteful number, since it uses less digits than its factorization.

265220456201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958971398.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 265220456201 its reverse (102654022562), we get a palindrome (367874478763).

The spelling of 265220456201 in words is "two hundred sixty-five billion, two hundred twenty million, four hundred fifty-six thousand, two hundred one".