213535446925 has 6 divisors (see below), whose sum is σ = 264783954218. Its totient is φ = 170828357520.

The previous prime is 213535446919. The next prime is 213535446977. The reversal of 213535446925 is 529644535312.

It can be written as a sum of positive squares in 3 ways, for example, as 3153608649 + 210381838276 = 56157^2 + 458674^2 .

It is not a de Polignac number, because 213535446925 - 2⁵ = 213535446893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4270708914 + ... + 4270708963.

Almost surely, 2^213535446925 is an apocalyptic number.

213535446925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213535446925 is a deficient number, since it is larger than the sum of its proper divisors (51248507293).

213535446925 is an equidigital number, since it uses as much as digits as its factorization.

213535446925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8541417887 (or 8541417882 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

The spelling of 213535446925 in words is "two hundred thirteen billion, five hundred thirty-five million, four hundred forty-six thousand, nine hundred twenty-five".