2565003397 has 8 divisors (see below), whose sum is σ = 2894675040. Its totient is φ = 2251413360.

The previous prime is 2565003391. The next prime is 2565003403. The reversal of 2565003397 is 7933005652.

It is an interprime number because it is at equal distance from previous prime (2565003391) and next prime (2565003403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565003397 - 2⁷ = 2565003269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565003391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4020063 + ... + 4020700.

It is an arithmetic number, because the mean of its divisors is an integer number (361834380).

Almost surely, 2^2565003397 is an apocalyptic number.

It is an amenable number.

2565003397 is a deficient number, since it is larger than the sum of its proper divisors (329671643).

2565003397 is a wasteful number, since it uses less digits than its factorization.

2565003397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040803.

The product of its (nonzero) digits is 170100, while the sum is 40.

The square root of 2565003397 is about 50645.8625852103. The cubic root of 2565003397 is about 1368.8713949113.

The spelling of 2565003397 in words is "two billion, five hundred sixty-five million, three thousand, three hundred ninety-seven".