525854651213 has 4 divisors (see below), whose sum is σ = 525857405280. Its totient is φ = 525851897148.

The previous prime is 525854651167. The next prime is 525854651221. The reversal of 525854651213 is 312156458525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525854651213 - 2⁸ = 525854650957 is a prime.

It is a super-2 number, since 2×525854651213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525854651263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067423 + ... + 1480236.

It is an arithmetic number, because the mean of its divisors is an integer number (131464351320).

Almost surely, 2^525854651213 is an apocalyptic number.

It is an amenable number.

525854651213 is a deficient number, since it is larger than the sum of its proper divisors (2754067).

525854651213 is a wasteful number, since it uses less digits than its factorization.

525854651213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754066.

The product of its digits is 1440000, while the sum is 47.

The spelling of 525854651213 in words is "five hundred twenty-five billion, eight hundred fifty-four million, six hundred fifty-one thousand, two hundred thirteen".