20495725098 has 16 divisors (see below), whose sum is σ = 41266562400. Its totient is φ = 6786056336.

The previous prime is 20495725097. The next prime is 20495725157. The reversal of 20495725098 is 89052759402.

It is a self number, because there is not a number n which added to its sum of digits gives 20495725098.

It is not an unprimeable number, because it can be changed into a prime (20495725091) 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, 11462040 + ... + 11463827.

It is an arithmetic number, because the mean of its divisors is an integer number (2579160150).

Almost surely, 2^20495725098 is an apocalyptic number.

20495725098 is an abundant number, since it is smaller than the sum of its proper divisors (20770837302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20495725098 is a wasteful number, since it uses less digits than its factorization.

20495725098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22926021.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 20495725098 in words is "twenty billion, four hundred ninety-five million, seven hundred twenty-five thousand, ninety-eight".