525613032391 has 2 divisors, whose sum is σ = 525613032392. Its totient is φ = 525613032390.

The previous prime is 525613032383. The next prime is 525613032403. The reversal of 525613032391 is 193230316525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525613032391 - 2³ = 525613032383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525613032341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262806516195 + 262806516196.

It is an arithmetic number, because the mean of its divisors is an integer number (262806516196).

Almost surely, 2^525613032391 is an apocalyptic number.

525613032391 is a deficient number, since it is larger than the sum of its proper divisors (1).

525613032391 is an equidigital number, since it uses as much as digits as its factorization.

525613032391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 525613032391 in words is "five hundred twenty-five billion, six hundred thirteen million, thirty-two thousand, three hundred ninety-one".