20152025440000 has 90 divisors (see below), whose sum is σ = 50265575304560. Its totient is φ = 8060810112000.

The previous prime is 20152025439991. The next prime is 20152025440003. The reversal of 20152025440000 is 4452025102.

It is a super-2 number, since 2×20152025440000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152025440003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62815080 + ... + 63135079.

Almost surely, 2^{20152025440000} is an apocalyptic number.

20152025440000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20152025440000 is an abundant number, since it is smaller than the sum of its proper divisors (30113549864560).

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

20152025440000 is an frugal number, since it uses more digits than its factorization.

20152025440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125950195 (or 125950166 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20152025440000 its reverse (4452025102), we get a palindrome (20156477465102).

The spelling of 20152025440000 in words is "twenty trillion, one hundred fifty-two billion, twenty-five million, four hundred forty thousand".