55995513490225 has 27 divisors (see below), whose sum is σ = 71912682873057. Its totient is φ = 43250868874080.

The previous prime is 55995513490201. The next prime is 55995513490243. The reversal of 55995513490225 is 52209431559955.

The square root of 55995513490225 is 7483015.

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 769688627761 + 55225824862464 = 877319^2 + 7431408^2 .

It is not a de Polignac number, because 55995513490225 - 2¹¹ = 55995513488177 is a prime.

It is a super-2 number, since 2×55995513490225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1085011372 + ... + 1085062978.

Almost surely, 2^{55995513490225} is an apocalyptic number.

55995513490225 is the 7483015-th square number.

55995513490225 is the 3741508-th centered octagonal number.

It is an amenable number.

55995513490225 is a deficient number, since it is larger than the sum of its proper divisors (15917169382832).

55995513490225 is an frugal number, since it uses more digits than its factorization.

55995513490225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103282 (or 51641 counting only the distinct ones).

The product of its (nonzero) digits is 109350000, while the sum is 64.

The spelling of 55995513490225 in words is "fifty-five trillion, nine hundred ninety-five billion, five hundred thirteen million, four hundred ninety thousand, two hundred twenty-five".