531235435051025 has 24 divisors (see below), whose sum is σ = 668136590342040. Its totient is φ = 418927473469440.

The previous prime is 531235435050917. The next prime is 531235435051037. The reversal of 531235435051025 is 520150534532135.

It can be written as a sum of positive squares in 12 ways, for example, as 436445914298944 + 94789520752081 = 20891288^2 + 9735991^2 .

It is not a de Polignac number, because 531235435051025 - 2³⁶ = 531166715574289 is a prime.

It is a super-2 number, since 2×531235435051025² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79826420 + ... + 86224869.

It is an arithmetic number, because the mean of its divisors is an integer number (27839024597585).

Almost surely, 2^{531235435051025} is an apocalyptic number.

It is an amenable number.

531235435051025 is a deficient number, since it is larger than the sum of its proper divisors (136901155291015).

531235435051025 is a wasteful number, since it uses less digits than its factorization.

531235435051025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166053125 (or 166053120 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 44.

The spelling of 531235435051025 in words is "five hundred thirty-one trillion, two hundred thirty-five billion, four hundred thirty-five million, fifty-one thousand, twenty-five".