215425602400 has 144 divisors (see below), whose sum is σ = 553977824400. Its totient is φ = 81577359360.

The previous prime is 215425602341. The next prime is 215425602463. The reversal of 215425602400 is 4206524512.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25972654 + ... + 25980946.

It is an arithmetic number, because the mean of its divisors is an integer number (3847068225).

Almost surely, 2^215425602400 is an apocalyptic number.

215425602400 is a gapful number since it is divisible by the number (20) 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 215425602400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276988912200).

215425602400 is an abundant number, since it is smaller than the sum of its proper divisors (338552222000).

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

215425602400 is a wasteful number, since it uses less digits than its factorization.

215425602400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041 (or 10028 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 215425602400 in words is "two hundred fifteen billion, four hundred twenty-five million, six hundred two thousand, four hundred".