20203135425 has 72 divisors (see below), whose sum is σ = 40937900640. Its totient is φ = 9795427200.

The previous prime is 20203135411. The next prime is 20203135429. The reversal of 20203135425 is 52453130202.

It is a happy number.

20203135425 is a `hidden beast` number, since 2 + 0 + 203 + 1 + 35 + 425 = 666.

It is not a de Polignac number, because 20203135425 - 2⁴ = 20203135409 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20203135429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 84340 + ... + 217989.

Almost surely, 2^20203135425 is an apocalyptic number.

20203135425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20203135425 is an abundant number, since it is smaller than the sum of its proper divisors (20734765215).

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

20203135425 is a wasteful number, since it uses less digits than its factorization.

20203135425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302365 (or 302348 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20203135425 its reverse (52453130202), we get a palindrome (72656265627).

The spelling of 20203135425 in words is "twenty billion, two hundred three million, one hundred thirty-five thousand, four hundred twenty-five".