20125143378 has 24 divisors (see below), whose sum is σ = 44782978188. Its totient is φ = 6527073312.

The previous prime is 20125143373. The next prime is 20125143403. The reversal of 20125143378 is 87334152102.

20125143378 is a `hidden beast` number, since 20 + 125 + 143 + 378 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20102419089 + 22724289 = 141783^2 + 4767^2 .

It is not an unprimeable number, because it can be changed into a prime (20125143373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15108301 + ... + 15109632.

Almost surely, 2^20125143378 is an apocalyptic number.

20125143378 is an abundant number, since it is smaller than the sum of its proper divisors (24657834810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20125143378 is a wasteful number, since it uses less digits than its factorization.

20125143378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30217978 (or 30217975 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20125143378 in words is "twenty billion, one hundred twenty-five million, one hundred forty-three thousand, three hundred seventy-eight".