21000625283 has 32 divisors (see below), whose sum is σ = 24724751040. Its totient is φ = 17627328000.

The previous prime is 21000625271. The next prime is 21000625333. The reversal of 21000625283 is 38252600012.

It is not a de Polignac number, because 21000625283 - 2⁴ = 21000625267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000625253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192666233 + ... + 192666341.

It is an arithmetic number, because the mean of its divisors is an integer number (772648470).

Almost surely, 2^21000625283 is an apocalyptic number.

21000625283 is a deficient number, since it is larger than the sum of its proper divisors (3724125757).

21000625283 is an equidigital number, since it uses as much as digits as its factorization.

21000625283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 21000625283 in words is "twenty-one billion, six hundred twenty-five thousand, two hundred eighty-three".