20725495252 has 48 divisors (see below), whose sum is σ = 45575405568. Its totient is φ = 8011271520.

The previous prime is 20725495249. The next prime is 20725495261. The reversal of 20725495252 is 25259452702.

It is a junction number, because it is equal to n+sod(n) for n = 20725495199 and 20725495208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225808 + ... + 304039.

It is an arithmetic number, because the mean of its divisors is an integer number (949487616).

Almost surely, 2^20725495252 is an apocalyptic number.

20725495252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20725495252 is an abundant number, since it is smaller than the sum of its proper divisors (24849910316).

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

20725495252 is a wasteful number, since it uses less digits than its factorization.

20725495252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529996 (or 529994 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 20725495252 in words is "twenty billion, seven hundred twenty-five million, four hundred ninety-five thousand, two hundred fifty-two".