154125154521 has 12 divisors (see below), whose sum is σ = 239750240548. Its totient is φ = 94846248864.

The previous prime is 154125154511. The next prime is 154125154567. The reversal of 154125154521 is 125451521451.

154125154521 is a `hidden beast` number, since 1 + 5 + 4 + 125 + 1 + 5 + 4 + 521 = 666.

154125154521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27734239296 + 126390915225 = 166536^2 + 355515^2 .

It is not a de Polignac number, because 154125154521 - 2¹⁸ = 154124892377 is a prime.

It is a super-2 number, since 2×154125154521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154125154511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658654390 + ... + 658654623.

Almost surely, 2^154125154521 is an apocalyptic number.

It is an amenable number.

154125154521 is a deficient number, since it is larger than the sum of its proper divisors (85625086027).

154125154521 is a wasteful number, since it uses less digits than its factorization.

154125154521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317309032 (or 1317309029 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

Adding to 154125154521 its reverse (125451521451), we get a palindrome (279576675972).

The spelling of 154125154521 in words is "one hundred fifty-four billion, one hundred twenty-five million, one hundred fifty-four thousand, five hundred twenty-one".