20213245525400 has 48 divisors (see below), whose sum is σ = 46997792395200. Its totient is φ = 8084954718080.

The previous prime is 20213245525399. The next prime is 20213245525463. The reversal of 20213245525400 is 452554231202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2598809 + ... + 6868791.

It is an arithmetic number, because the mean of its divisors is an integer number (979120674900).

Almost surely, 2^{20213245525400} is an apocalyptic number.

20213245525400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213245525400 is an abundant number, since it is smaller than the sum of its proper divisors (26784546869800).

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

20213245525400 is a wasteful number, since it uses less digits than its factorization.

20213245525400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293668 (or 4293659 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 20213245525400 its reverse (452554231202), we get a palindrome (20665799756602).

The spelling of 20213245525400 in words is "twenty trillion, two hundred thirteen billion, two hundred forty-five million, five hundred twenty-five thousand, four hundred".