2154026142225 has 72 divisors (see below), whose sum is σ = 3997875693240. Its totient is φ = 1107327191040.

The previous prime is 2154026142217. The next prime is 2154026142241. The reversal of 2154026142225 is 5222416204512.

2154026142225 is a `hidden beast` number, since 2 + 15 + 4 + 0 + 2 + 614 + 2 + 2 + 25 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1192536073089 + 961490069136 = 1092033^2 + 980556^2 .

It is not a de Polignac number, because 2154026142225 - 2³ = 2154026142217 is a prime.

It is a super-4 number, since 4×2154026142225⁴ (a number of 50 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154026142225.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3590979 + ... + 4147671.

It is an arithmetic number, because the mean of its divisors is an integer number (55526051295).

Almost surely, 2^{2154026142225} is an apocalyptic number.

2154026142225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154026142225 is a deficient number, since it is larger than the sum of its proper divisors (1843849551015).

2154026142225 is a wasteful number, since it uses less digits than its factorization.

2154026142225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557331 (or 557323 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 2154026142225 in words is "two trillion, one hundred fifty-four billion, twenty-six million, one hundred forty-two thousand, two hundred twenty-five".