21102602325 has 24 divisors (see below), whose sum is σ = 39873870528. Its totient is φ = 9646903680.

The previous prime is 21102602267. The next prime is 21102602341. The reversal of 21102602325 is 52320620112.

It is not a de Polignac number, because 21102602325 - 2¹⁴ = 21102585941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21102602295 and 21102602304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20097192 + ... + 20098241.

It is an arithmetic number, because the mean of its divisors is an integer number (1661411272).

Almost surely, 2^21102602325 is an apocalyptic number.

21102602325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21102602325 is a deficient number, since it is larger than the sum of its proper divisors (18771268203).

21102602325 is a wasteful number, since it uses less digits than its factorization.

21102602325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40195453 (or 40195448 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 21102602325 in words is "twenty-one billion, one hundred two million, six hundred two thousand, three hundred twenty-five".