2571253616 has 20 divisors (see below), whose sum is σ = 4987473192. Its totient is φ = 1284163776.

The previous prime is 2571253613. The next prime is 2571253649. The reversal of 2571253616 is 6163521752.

It is a happy number.

It is a super-2 number, since 2×2571253616² = 13222690315586150912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2571253616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571253613) 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, 76871 + ... + 105126.

Almost surely, 2^2571253616 is an apocalyptic number.

It is an amenable number.

2571253616 is a deficient number, since it is larger than the sum of its proper divisors (2416219576).

2571253616 is a wasteful number, since it uses less digits than its factorization.

2571253616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182888 (or 182882 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 2571253616 is about 50707.5301705772. The cubic root of 2571253616 is about 1369.9823493916.

The spelling of 2571253616 in words is "two billion, five hundred seventy-one million, two hundred fifty-three thousand, six hundred sixteen".