2164250473125 has 40 divisors (see below), whose sum is σ = 3883309118304. Its totient is φ = 1065477144000.

The previous prime is 2164250473123. The next prime is 2164250473127. The reversal of 2164250473125 is 5213740524612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2164250473123) and next prime (2164250473127).

It is not a de Polignac number, because 2164250473125 - 2¹ = 2164250473123 is a prime.

It is a super-2 number, since 2×2164250473125² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164250473123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44370507 + ... + 44419256.

Almost surely, 2^{2164250473125} is an apocalyptic number.

2164250473125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164250473125 is a deficient number, since it is larger than the sum of its proper divisors (1719058645179).

2164250473125 is an equidigital number, since it uses as much as digits as its factorization.

2164250473125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88789799 (or 88789784 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

Adding to 2164250473125 its reverse (5213740524612), we get a palindrome (7377990997737).

The spelling of 2164250473125 in words is "two trillion, one hundred sixty-four billion, two hundred fifty million, four hundred seventy-three thousand, one hundred twenty-five".