155492205625 has 15 divisors (see below), whose sum is σ = 194315379643. Its totient is φ = 124385878000.

The previous prime is 155492205577. The next prime is 155492205677. The reversal of 155492205625 is 526502294551.

The square root of 155492205625 is 394325.

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

It can be written as a sum of positive squares in 7 ways, for example, as 107634517929 + 47857687696 = 328077^2 + 218764^2 .

It is not a de Polignac number, because 155492205625 - 2¹¹ = 155492203577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9850239 + ... + 9866011.

Almost surely, 2^155492205625 is an apocalyptic number.

155492205625 is the 394325-th square number.

155492205625 is the 197163-rd centered octagonal number.

It is an amenable number.

155492205625 is a deficient number, since it is larger than the sum of its proper divisors (38823174018).

155492205625 is an frugal number, since it uses more digits than its factorization.

155492205625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31566 (or 15778 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 155492205625 in words is "one hundred fifty-five billion, four hundred ninety-two million, two hundred five thousand, six hundred twenty-five".