7875258479 has 4 divisors (see below), whose sum is σ = 8591191080. Its totient is φ = 7159325880.

The previous prime is 7875258467. The next prime is 7875258497. The reversal of 7875258479 is 9748525787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7875258479 - 2¹⁶ = 7875192943 is a prime.

It is a super-2 number, since 2×7875258479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875258409) 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, 357966284 + ... + 357966305.

It is an arithmetic number, because the mean of its divisors is an integer number (2147797770).

Almost surely, 2^7875258479 is an apocalyptic number.

7875258479 is a deficient number, since it is larger than the sum of its proper divisors (715932601).

7875258479 is a wasteful number, since it uses less digits than its factorization.

7875258479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715932600.

The product of its digits is 39513600, while the sum is 62.

The square root of 7875258479 is about 88742.6530987214. The cubic root of 7875258479 is about 1989.5503709636.

The spelling of 7875258479 in words is "seven billion, eight hundred seventy-five million, two hundred fifty-eight thousand, four hundred seventy-nine".