78250053253 has 8 divisors (see below), whose sum is σ = 82857684888. Its totient is φ = 73642942464.

The previous prime is 78250053241. The next prime is 78250053311. The reversal of 78250053253 is 35235005287.

It can be written as a sum of positive squares in 4 ways, for example, as 4786287489 + 73463765764 = 69183^2 + 271042^2 .

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

It is not a de Polignac number, because 78250053253 - 2¹⁷ = 78249922181 is a prime.

It is a super-2 number, since 2×78250053253² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78250057253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203575 + ... + 444907.

It is an arithmetic number, because the mean of its divisors is an integer number (10357210611).

Almost surely, 2^78250053253 is an apocalyptic number.

It is an amenable number.

78250053253 is a deficient number, since it is larger than the sum of its proper divisors (4607631635).

78250053253 is a wasteful number, since it uses less digits than its factorization.

78250053253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260423.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 78250053253 in words is "seventy-eight billion, two hundred fifty million, fifty-three thousand, two hundred fifty-three".