20034542025 has 42 divisors (see below), whose sum is σ = 37247243070. Its totient is φ = 10685079360.

The previous prime is 20034542023. The next prime is 20034542029. The reversal of 20034542025 is 52024543002.

It is a happy number.

20034542025 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 454 + 202 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 4882655376 + 15151886649 = 69876^2 + 123093^2 .

It is not a de Polignac number, because 20034542025 - 2¹ = 20034542023 is a prime.

It is a super-2 number, since 2×20034542025² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20034542025.

It is not an unprimeable number, because it can be changed into a prime (20034542023) 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 41 ways as a sum of consecutive naturals, for example, 531420 + ... + 567869.

Almost surely, 2^20034542025 is an apocalyptic number.

20034542025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20034542025 is a deficient number, since it is larger than the sum of its proper divisors (17212701045).

20034542025 is an equidigital number, since it uses as much as digits as its factorization.

20034542025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099317 (or 1099297 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 20034542025 in words is "twenty billion, thirty-four million, five hundred forty-two thousand, twenty-five".