20625475261 has 8 divisors (see below), whose sum is σ = 20956558464. Its totient is φ = 20295704160.

The previous prime is 20625475223. The next prime is 20625475271. The reversal of 20625475261 is 16257452602.

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 20625475261 - 2¹¹ = 20625473213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625475271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296311 + ... + 359236.

It is an arithmetic number, because the mean of its divisors is an integer number (2619569808).

Almost surely, 2^20625475261 is an apocalyptic number.

It is an amenable number.

20625475261 is a deficient number, since it is larger than the sum of its proper divisors (331083203).

20625475261 is an equidigital number, since it uses as much as digits as its factorization.

20625475261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656051.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 20625475261 in words is "twenty billion, six hundred twenty-five million, four hundred seventy-five thousand, two hundred sixty-one".