20425458761 has 8 divisors (see below), whose sum is σ = 20925856224. Its totient is φ = 19925166880.

The previous prime is 20425458751. The next prime is 20425458811. The reversal of 20425458761 is 16785452402.

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

It is a de Polignac number, because none of the positive numbers 2^k-20425458761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20425458721) 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, 485030 + ... + 525456.

It is an arithmetic number, because the mean of its divisors is an integer number (2615732028).

Almost surely, 2^20425458761 is an apocalyptic number.

It is an amenable number.

20425458761 is a deficient number, since it is larger than the sum of its proper divisors (500397463).

20425458761 is a wasteful number, since it uses less digits than its factorization.

20425458761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52791.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 20425458761 in words is "twenty billion, four hundred twenty-five million, four hundred fifty-eight thousand, seven hundred sixty-one".