2500641565 has 8 divisors (see below), whose sum is σ = 3070555488. Its totient is φ = 1953989520.

The previous prime is 2500641529. The next prime is 2500641569. The reversal of 2500641565 is 5651460052.

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

It is not a de Polignac number, because 2500641565 - 2¹⁵ = 2500608797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500641565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500641569) 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, 5815231 + ... + 5815660.

It is an arithmetic number, because the mean of its divisors is an integer number (383819436).

Almost surely, 2^2500641565 is an apocalyptic number.

It is an amenable number.

2500641565 is a deficient number, since it is larger than the sum of its proper divisors (569913923).

2500641565 is a wasteful number, since it uses less digits than its factorization.

2500641565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630939.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2500641565 is about 50006.4152384472. The cubic root of 2500641565 is about 1357.3248967235.

The spelling of 2500641565 in words is "two billion, five hundred million, six hundred forty-one thousand, five hundred sixty-five".