154520425542 has 64 divisors (see below), whose sum is σ = 357846257664. Its totient is φ = 43567800480.

The previous prime is 154520425489. The next prime is 154520425561. The reversal of 154520425542 is 245524025451.

It is a self number, because there is not a number n which added to its sum of digits gives 154520425542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3137367 + ... + 3186237.

It is an arithmetic number, because the mean of its divisors is an integer number (5591347776).

Almost surely, 2^154520425542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154520425542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178923128832).

154520425542 is an abundant number, since it is smaller than the sum of its proper divisors (203325832122).

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

154520425542 is a wasteful number, since it uses less digits than its factorization.

154520425542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49873.

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

The spelling of 154520425542 in words is "one hundred fifty-four billion, five hundred twenty million, four hundred twenty-five thousand, five hundred forty-two".