2531641265 has 16 divisors (see below), whose sum is σ = 3068150400. Its totient is φ = 2005231872.

The previous prime is 2531641243. The next prime is 2531641279. The reversal of 2531641265 is 5621461352.

It is a cyclic number.

It is not a de Polignac number, because 2531641265 - 2⁶ = 2531641201 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709556 + ... + 713114.

It is an arithmetic number, because the mean of its divisors is an integer number (191759400).

Almost surely, 2^2531641265 is an apocalyptic number.

It is an amenable number.

2531641265 is a deficient number, since it is larger than the sum of its proper divisors (536509135).

2531641265 is a wasteful number, since it uses less digits than its factorization.

2531641265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936.

The product of its digits is 43200, while the sum is 35.

The square root of 2531641265 is about 50315.4177663269. The cubic root of 2531641265 is about 1362.9106608275.

The spelling of 2531641265 in words is "two billion, five hundred thirty-one million, six hundred forty-one thousand, two hundred sixty-five".