2151240125200 has 60 divisors (see below), whose sum is σ = 5172560915940. Its totient is φ = 859795694080.

The previous prime is 2151240125191. The next prime is 2151240125207. The reversal of 2151240125200 is 25210421512.

It can be written as a sum of positive squares in 6 ways, for example, as 13293167616 + 2137946957584 = 115296^2 + 1462172^2 .

It is a super-3 number, since 3×2151240125200³ (a number of 38 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2151240125207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1696399 + ... + 2679598.

It is an arithmetic number, because the mean of its divisors is an integer number (86209348599).

Almost surely, 2^{2151240125200} is an apocalyptic number.

2151240125200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151240125200 is an abundant number, since it is smaller than the sum of its proper divisors (3021320790740).

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

2151240125200 is a wasteful number, since it uses less digits than its factorization.

2151240125200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377244 (or 4377233 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 2151240125200 its reverse (25210421512), we get a palindrome (2176450546712).

The spelling of 2151240125200 in words is "two trillion, one hundred fifty-one billion, two hundred forty million, one hundred twenty-five thousand, two hundred".