21525095 has 8 divisors (see below), whose sum is σ = 26120880. Its totient is φ = 17026240.

The previous prime is 21525089. The next prime is 21525109. The reversal of 21525095 is 59052512.

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

It is not a de Polignac number, because 21525095 - 2¹² = 21520999 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, 23741 + ... + 24630.

It is an arithmetic number, because the mean of its divisors is an integer number (3265110).

Almost surely, 2^21525095 is an apocalyptic number.

21525095 is a deficient number, since it is larger than the sum of its proper divisors (4595785).

21525095 is an equidigital number, since it uses as much as digits as its factorization.

21525095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48465.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 21525095 is about 4639.5145220163. The cubic root of 21525095 is about 278.1730329026.

The spelling of 21525095 in words is "twenty-one million, five hundred twenty-five thousand, ninety-five".