154421641425 has 48 divisors (see below), whose sum is σ = 255966117120. Its totient is φ = 82147031040.

The previous prime is 154421641391. The next prime is 154421641471. The reversal of 154421641425 is 524146124451.

154421641425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154421641425 - 2¹² = 154421637329 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 81746881 + ... + 81748769.

It is an arithmetic number, because the mean of its divisors is an integer number (5332627440).

Almost surely, 2^154421641425 is an apocalyptic number.

154421641425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154421641425 is a deficient number, since it is larger than the sum of its proper divisors (101544475695).

154421641425 is a wasteful number, since it uses less digits than its factorization.

154421641425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122 (or 4117 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

Adding to 154421641425 its reverse (524146124451), we get a palindrome (678567765876).

The spelling of 154421641425 in words is "one hundred fifty-four billion, four hundred twenty-one million, six hundred forty-one thousand, four hundred twenty-five".