20225373520 has 40 divisors (see below), whose sum is σ = 51298904160. Its totient is φ = 7354680960.

The previous prime is 20225373499. The next prime is 20225373563. The reversal of 20225373520 is 2537352202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11490810 + ... + 11492569.

It is an arithmetic number, because the mean of its divisors is an integer number (1282472604).

Almost surely, 2^20225373520 is an apocalyptic number.

20225373520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20225373520 is an abundant number, since it is smaller than the sum of its proper divisors (31073530640).

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

20225373520 is a wasteful number, since it uses less digits than its factorization.

20225373520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22983403 (or 22983397 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 31.

The spelling of 20225373520 in words is "twenty billion, two hundred twenty-five million, three hundred seventy-three thousand, five hundred twenty".