18425026019440 has 20 divisors (see below), whose sum is σ = 42838185495384. Its totient is φ = 7370010407744.

The previous prime is 18425026019429. The next prime is 18425026019441. The reversal of 18425026019440 is 4491062052481.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×18425026019440² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18425026019441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115156412542 + ... + 115156412701.

Almost surely, 2^{18425026019440} is an apocalyptic number.

18425026019440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18425026019440 is an abundant number, since it is smaller than the sum of its proper divisors (24413159475944).

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

18425026019440 is a wasteful number, since it uses less digits than its factorization.

18425026019440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230312825256 (or 230312825250 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 18425026019440 in words is "eighteen trillion, four hundred twenty-five billion, twenty-six million, nineteen thousand, four hundred forty".