87849775825 has 12 divisors (see below), whose sum is σ = 124495682560. Its totient is φ = 60239846160.

The previous prime is 87849775823. The next prime is 87849775831. The reversal of 87849775825 is 52857794878.

It is a happy number.

It is not a de Polignac number, because 87849775825 - 2¹ = 87849775823 is a prime.

It is a super-2 number, since 2×87849775825² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87849775823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250999185 + ... + 250999534.

Almost surely, 2^87849775825 is an apocalyptic number.

It is an amenable number.

87849775825 is a deficient number, since it is larger than the sum of its proper divisors (36645906735).

87849775825 is a wasteful number, since it uses less digits than its factorization.

87849775825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501998736 (or 501998731 counting only the distinct ones).

The product of its digits is 316108800, while the sum is 70.

The spelling of 87849775825 in words is "eighty-seven billion, eight hundred forty-nine million, seven hundred seventy-five thousand, eight hundred twenty-five".