20257022625520 has 40 divisors (see below), whose sum is σ = 47154804461856. Its totient is φ = 8092963569408.

The previous prime is 20257022625509. The next prime is 20257022625547. The reversal of 20257022625520 is 2552622075202.

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

It is a Harshad number since it is a multiple of its sum of digits (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, 153769387 + ... + 153901066.

Almost surely, 2^{20257022625520} is an apocalyptic number.

20257022625520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20257022625520 is an abundant number, since it is smaller than the sum of its proper divisors (26897781836336).

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

20257022625520 is a wasteful number, since it uses less digits than its factorization.

20257022625520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307671289 (or 307671283 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 40.

The spelling of 20257022625520 in words is "twenty trillion, two hundred fifty-seven billion, twenty-two million, six hundred twenty-five thousand, five hundred twenty".