1810437525625 has 45 divisors (see below), whose sum is σ = 2288212647721. Its totient is φ = 1431961526000.

The previous prime is 1810437525619. The next prime is 1810437525683. The reversal of 1810437525625 is 5265257340181.

The square root of 1810437525625 is 1345525.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141938302009 + 1668499223616 = 376747^2 + 1291704^2 .

It is not a de Polignac number, because 1810437525625 - 2¹⁹ = 1810437001337 is a prime.

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, 3599279124 + ... + 3599279626.

Almost surely, 2^{1810437525625} is an apocalyptic number.

1810437525625 is the 1345525-th square number.

1810437525625 is the 672763-rd centered octagonal number.

It is an amenable number.

1810437525625 is a deficient number, since it is larger than the sum of its proper divisors (477775122096).

1810437525625 is an frugal number, since it uses more digits than its factorization.

1810437525625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

Multiplying 1810437525625 by its sum of digits (49), we get a square (88711438755625 = 9418675²).

The spelling of 1810437525625 in words is "one trillion, eight hundred ten billion, four hundred thirty-seven million, five hundred twenty-five thousand, six hundred twenty-five".