21152402625250 has 128 divisors (see below), whose sum is σ = 42721774018560. Its totient is φ = 7795751040000.

The previous prime is 21152402625197. The next prime is 21152402625287. The reversal of 21152402625250 is 5252620425112.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5085932671 + ... + 5085936829.

It is an arithmetic number, because the mean of its divisors is an integer number (333763859520).

Almost surely, 2^{21152402625250} is an apocalyptic number.

21152402625250 is an abundant number, since it is smaller than the sum of its proper divisors (21569371393310).

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

21152402625250 is a wasteful number, since it uses less digits than its factorization.

21152402625250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6693 (or 6683 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 21152402625250 in words is "twenty-one trillion, one hundred fifty-two billion, four hundred two million, six hundred twenty-five thousand, two hundred fifty".