21250432624255 has 8 divisors (see below), whose sum is σ = 25500552474672. Its totient is φ = 17000323882368.

The previous prime is 21250432624249. The next prime is 21250432624271. The reversal of 21250432624255 is 55242623405212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21250432624255 - 2²⁹ = 21249895753343 is a prime.

It is a Duffinian number.

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, 2262999 + ... + 6900871.

It is an arithmetic number, because the mean of its divisors is an integer number (3187569059334).

Almost surely, 2^{21250432624255} is an apocalyptic number.

21250432624255 is a deficient number, since it is larger than the sum of its proper divisors (4250119850417).

21250432624255 is an equidigital number, since it uses as much as digits as its factorization.

21250432624255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554265.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 21250432624255 in words is "twenty-one trillion, two hundred fifty billion, four hundred thirty-two million, six hundred twenty-four thousand, two hundred fifty-five".