21325090015 has 8 divisors (see below), whose sum is σ = 25591316400. Its totient is φ = 17059266432.

The previous prime is 21325090001. The next prime is 21325090103. The reversal of 21325090015 is 51009052312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21325090015 is a prime.

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, 31572 + ... + 208918.

It is an arithmetic number, because the mean of its divisors is an integer number (3198914550).

Almost surely, 2^21325090015 is an apocalyptic number.

21325090015 is a deficient number, since it is larger than the sum of its proper divisors (4266226385).

21325090015 is a wasteful number, since it uses less digits than its factorization.

21325090015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201401.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 21325090015 in words is "twenty-one billion, three hundred twenty-five million, ninety thousand, fifteen".