20225242340 has 12 divisors (see below), whose sum is σ = 42473008956. Its totient is φ = 8090096928.

The previous prime is 20225242333. The next prime is 20225242357. The reversal of 20225242340 is 4324252202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12366774436 + 7858467904 = 111206^2 + 88648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505631039 + ... + 505631078.

It is an arithmetic number, because the mean of its divisors is an integer number (3539417413).

Almost surely, 2^20225242340 is an apocalyptic number.

20225242340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20225242340 is an abundant number, since it is smaller than the sum of its proper divisors (22247766616).

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

20225242340 is a wasteful number, since it uses less digits than its factorization.

20225242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011262126 (or 1011262124 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 20225242340 its reverse (4324252202), we get a palindrome (24549494542).

The spelling of 20225242340 in words is "twenty billion, two hundred twenty-five million, two hundred forty-two thousand, three hundred forty".