154225254540 has 192 divisors, whose sum is σ = 521174384640. Its totient is φ = 33288226560.

The previous prime is 154225254509. The next prime is 154225254563. The reversal of 154225254540 is 45452522451.

It is a super-2 number, since 2×154225254540² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2450709 + ... + 2512851.

It is an arithmetic number, because the mean of its divisors is an integer number (2714449920).

Almost surely, 2^154225254540 is an apocalyptic number.

154225254540 is a gapful number since it is divisible by the number (10) 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 154225254540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260587192320).

154225254540 is an abundant number, since it is smaller than the sum of its proper divisors (366949130100).

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

154225254540 is a wasteful number, since it uses less digits than its factorization.

154225254540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62492 (or 62490 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 39.

Adding to 154225254540 its reverse (45452522451), we get a palindrome (199677776991).

The spelling of 154225254540 in words is "one hundred fifty-four billion, two hundred twenty-five million, two hundred fifty-four thousand, five hundred forty".