2565453601 has 4 divisors (see below), whose sum is σ = 2565561600. Its totient is φ = 2565345604.

The previous prime is 2565453551. The next prime is 2565453623. The reversal of 2565453601 is 1063545652.

2565453601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2565453601 - 2¹³ = 2565445409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565453641) 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, 1081 + ... + 71638.

It is an arithmetic number, because the mean of its divisors is an integer number (641390400).

Almost surely, 2^2565453601 is an apocalyptic number.

It is an amenable number.

2565453601 is a deficient number, since it is larger than the sum of its proper divisors (107999).

2565453601 is an equidigital number, since it uses as much as digits as its factorization.

2565453601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107998.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 2565453601 is about 50650.3070178257. The cubic root of 2565453601 is about 1368.9514773687.

The spelling of 2565453601 in words is "two billion, five hundred sixty-five million, four hundred fifty-three thousand, six hundred one".