2564321275 has 6 divisors (see below), whose sum is σ = 3179758412. Its totient is φ = 2051457000.

The previous prime is 2564321251. The next prime is 2564321299. The reversal of 2564321275 is 5721234652.

It is an interprime number because it is at equal distance from previous prime (2564321251) and next prime (2564321299).

It is not a de Polignac number, because 2564321275 - 2⁹ = 2564320763 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51286401 + ... + 51286450.

Almost surely, 2^2564321275 is an apocalyptic number.

2564321275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2564321275 is a deficient number, since it is larger than the sum of its proper divisors (615437137).

2564321275 is a wasteful number, since it uses less digits than its factorization.

2564321275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102572861 (or 102572856 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 2564321275 is about 50639.1279052078. The cubic root of 2564321275 is about 1368.7500409360.

The spelling of 2564321275 in words is "two billion, five hundred sixty-four million, three hundred twenty-one thousand, two hundred seventy-five".