7805252553 has 16 divisors (see below), whose sum is σ = 12009194496. Its totient is φ = 4416840720.

The previous prime is 7805252549. The next prime is 7805252557. The reversal of 7805252553 is 3552525087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7805252549) and next prime (7805252557).

It is not a de Polignac number, because 7805252553 - 2² = 7805252549 is a prime.

It is a super-2 number, since 2×7805252553² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7805252557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1802103 + ... + 1806428.

It is an arithmetic number, because the mean of its divisors is an integer number (750574656).

Almost surely, 2^7805252553 is an apocalyptic number.

It is an amenable number.

7805252553 is a deficient number, since it is larger than the sum of its proper divisors (4203941943).

7805252553 is a wasteful number, since it uses less digits than its factorization.

7805252553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608644.

The product of its (nonzero) digits is 420000, while the sum is 42.

The square root of 7805252553 is about 88347.3403844168. The cubic root of 7805252553 is about 1983.6375461959.

The spelling of 7805252553 in words is "seven billion, eight hundred five million, two hundred fifty-two thousand, five hundred fifty-three".