55321392025 has 9 divisors (see below), whose sum is σ = 68599984413. Its totient is φ = 44256172800.

The previous prime is 55321392017. The next prime is 55321392089. The reversal of 55321392025 is 52029312355.

The square root of 55321392025 is 235205.

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 14632047369 + 40689344656 = 120963^2 + 201716^2 .

It is not a de Polignac number, because 55321392025 - 2³ = 55321392017 is a prime.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 1152505 + ... + 1199545.

Almost surely, 2^55321392025 is an apocalyptic number.

55321392025 is the 235205-th square number.

55321392025 is the 117603-rd centered octagonal number.

It is an amenable number.

55321392025 is a deficient number, since it is larger than the sum of its proper divisors (13278592388).

55321392025 is an frugal number, since it uses more digits than its factorization.

55321392025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94092 (or 47046 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 55321392025 in words is "fifty-five billion, three hundred twenty-one million, three hundred ninety-two thousand, twenty-five".