19925312000 has 480 divisors, whose sum is σ = 57053348352. Its totient is φ = 6927360000.

The previous prime is 19925311961. The next prime is 19925312003. The reversal of 19925312000 is 21352991.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (19925312003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240063959 + ... + 240064041.

Almost surely, 2^19925312000 is an apocalyptic number.

19925312000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19925312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28526674176).

19925312000 is an abundant number, since it is smaller than the sum of its proper divisors (37128036352).

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

19925312000 is an equidigital number, since it uses as much as digits as its factorization.

19925312000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

Adding to 19925312000 its reverse (21352991), we get a palindrome (19946664991).

The spelling of 19925312000 in words is "nineteen billion, nine hundred twenty-five million, three hundred twelve thousand".