1587713402025 has 45 divisors (see below), whose sum is σ = 2941099095253. Its totient is φ = 846750240000.

The previous prime is 1587713401993. The next prime is 1587713402089. The reversal of 1587713402025 is 5202043177851.

The square root of 1587713402025 is 1260045.

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

1587713402025 is a `hidden beast` number, since 1 + 587 + 7 + 1 + 3 + 40 + 2 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3830743449 + 1583882658576 = 61893^2 + 1258524^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 1587713402025 - 2⁵ = 1587713401993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 56688025 + ... + 56716025.

Almost surely, 2^{1587713402025} is an apocalyptic number.

1587713402025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1587713402025 is the 1260045-th square number.

1587713402025 is the 630023-rd centered octagonal number.

It is an amenable number.

1587713402025 is a deficient number, since it is larger than the sum of its proper divisors (1353385693228).

1587713402025 is an frugal number, since it uses more digits than its factorization.

1587713402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56024 (or 28009 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

Adding to 1587713402025 its reverse (5202043177851), we get a palindrome (6789756579876).

The spelling of 1587713402025 in words is "one trillion, five hundred eighty-seven billion, seven hundred thirteen million, four hundred two thousand, twenty-five".