21260565200425 has 24 divisors (see below), whose sum is σ = 26422505315712. Its totient is φ = 16970163456000.

The previous prime is 21260565200417. The next prime is 21260565200453. The reversal of 21260565200425 is 52400256506212.

It is not a de Polignac number, because 21260565200425 - 2³ = 21260565200417 is a prime.

It is a Duffinian 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, 22729740 + ... + 23646610.

It is an arithmetic number, because the mean of its divisors is an integer number (1100937721488).

Almost surely, 2^{21260565200425} is an apocalyptic number.

21260565200425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21260565200425 is a deficient number, since it is larger than the sum of its proper divisors (5161940115287).

21260565200425 is a wasteful number, since it uses less digits than its factorization.

21260565200425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918969 (or 918964 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 21260565200425 in words is "twenty-one trillion, two hundred sixty billion, five hundred sixty-five million, two hundred thousand, four hundred twenty-five".