51055662025 has 9 divisors (see below), whose sum is σ = 63310421863. Its totient is φ = 40843625800.

The previous prime is 51055662023. The next prime is 51055662079. The reversal of 51055662025 is 52026655015.

The square root of 51055662025 is 225955.

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

It can be written as a sum of positive squares in only one way, i.e., 18380038329 + 32675623696 = 135573^2 + 180764^2 .

It is not a de Polignac number, because 51055662025 - 2¹ = 51055662023 is a prime.

It is a super-2 number, since 2×51055662025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055662023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1107180 + ... + 1152370.

Almost surely, 2^51055662025 is an apocalyptic number.

51055662025 is the 225955-th square number.

51055662025 is the 112978-th centered octagonal number.

It is an amenable number.

51055662025 is a deficient number, since it is larger than the sum of its proper divisors (12254759838).

51055662025 is an frugal number, since it uses more digits than its factorization.

51055662025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90392 (or 45196 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 51055662025 in words is "fifty-one billion, fifty-five million, six hundred sixty-two thousand, twenty-five".