20425032407 has 8 divisors (see below), whose sum is σ = 22003148160. Its totient is φ = 18847910880.

The previous prime is 20425032391. The next prime is 20425032431. The reversal of 20425032407 is 70423052402.

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 20425032407 - 2⁴ = 20425032391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20425032407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425032457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205607 + ... + 288312.

It is an arithmetic number, because the mean of its divisors is an integer number (2750393520).

Almost surely, 2^20425032407 is an apocalyptic number.

20425032407 is a deficient number, since it is larger than the sum of its proper divisors (1578115753).

20425032407 is a wasteful number, since it uses less digits than its factorization.

20425032407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497113.

The product of its (nonzero) digits is 13440, while the sum is 29.

Adding to 20425032407 its reverse (70423052402), we get a palindrome (90848084809).

The spelling of 20425032407 in words is "twenty billion, four hundred twenty-five million, thirty-two thousand, four hundred seven".