19885725010 has 16 divisors (see below), whose sum is σ = 37899852696. Its totient is φ = 7486390528.

The previous prime is 19885724941. The next prime is 19885725011. The reversal of 19885725010 is 1052758891.

It can be written as a sum of positive squares in 4 ways, for example, as 15360875721 + 4524849289 = 123939^2 + 67267^2 .

It is not an unprimeable number, because it can be changed into a prime (19885725011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58487257 + ... + 58487596.

Almost surely, 2^19885725010 is an apocalyptic number.

19885725010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19885725010 is a deficient number, since it is larger than the sum of its proper divisors (18014127686).

19885725010 is a wasteful number, since it uses less digits than its factorization.

19885725010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116974877.

The product of its (nonzero) digits is 201600, while the sum is 46.

The spelling of 19885725010 in words is "nineteen billion, eight hundred eighty-five million, seven hundred twenty-five thousand, ten".