1351185384025 has 27 divisors (see below), whose sum is σ = 1682627924991. Its totient is φ = 1076349833040.

The previous prime is 1351185384023. The next prime is 1351185384097. The reversal of 1351185384025 is 5204835811531.

The square root of 1351185384025 is 1162405.

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., 486426738249 + 864758645776 = 697443^2 + 929924^2 .

It is not a de Polignac number, because 1351185384025 - 2¹ = 1351185384023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351185384023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2226005272 + ... + 2226005878.

Almost surely, 2^{1351185384025} is an apocalyptic number.

1351185384025 is the 1162405-th square number.

1351185384025 is the 581203-rd centered octagonal number.

It is an amenable number.

1351185384025 is a deficient number, since it is larger than the sum of its proper divisors (331442540966).

1351185384025 is an frugal number, since it uses more digits than its factorization.

1351185384025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 1351185384025 in words is "one trillion, three hundred fifty-one billion, one hundred eighty-five million, three hundred eighty-four thousand, twenty-five".