212544135025 has 6 divisors (see below), whose sum is σ = 263554727462. Its totient is φ = 170035308000.

The previous prime is 212544135017. The next prime is 212544135029. The reversal of 212544135025 is 520531445212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23082421041 + 189461713984 = 151929^2 + 435272^2 .

It is not a de Polignac number, because 212544135025 - 2³ = 212544135017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212544135029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4250882676 + ... + 4250882725.

Almost surely, 2^212544135025 is an apocalyptic number.

212544135025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212544135025 is a deficient number, since it is larger than the sum of its proper divisors (51010592437).

212544135025 is an equidigital number, since it uses as much as digits as its factorization.

212544135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501765411 (or 8501765406 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 212544135025 in words is "two hundred twelve billion, five hundred forty-four million, one hundred thirty-five thousand, twenty-five".