154830445225 has 9 divisors (see below), whose sum is σ = 191992191717. Its totient is φ = 123862782240.

The previous prime is 154830445183. The next prime is 154830445241. The reversal of 154830445225 is 522544038451.

The square root of 154830445225 is 393485.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 70472728089 + 84357717136 = 265467^2 + 290444^2 .

It is not a de Polignac number, because 154830445225 - 2¹³ = 154830437033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1928077 + ... + 2006773.

Almost surely, 2^154830445225 is an apocalyptic number.

154830445225 is the 393485-th square number.

154830445225 is the 196743-rd centered octagonal number.

It is an amenable number.

154830445225 is a deficient number, since it is larger than the sum of its proper divisors (37161746492).

154830445225 is an frugal number, since it uses more digits than its factorization.

154830445225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157404 (or 78702 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 43.

The spelling of 154830445225 in words is "one hundred fifty-four billion, eight hundred thirty million, four hundred forty-five thousand, two hundred twenty-five".