212501774725 has 12 divisors (see below), whose sum is σ = 263518089120. Its totient is φ = 169991169200.

The previous prime is 212501774701. The next prime is 212501774741. The reversal of 212501774725 is 527477105212.

It is not a de Polignac number, because 212501774725 - 2²³ = 212493386117 is a prime.

It is a super-2 number, since 2×212501774725² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181290 + ... + 676660.

It is an arithmetic number, because the mean of its divisors is an integer number (21959840760).

Almost surely, 2^212501774725 is an apocalyptic number.

212501774725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212501774725 is a deficient number, since it is larger than the sum of its proper divisors (51016314395).

212501774725 is a wasteful number, since it uses less digits than its factorization.

212501774725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512540 (or 512535 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 43.

Adding to 212501774725 its reverse (527477105212), we get a palindrome (739978879937).

The spelling of 212501774725 in words is "two hundred twelve billion, five hundred one million, seven hundred seventy-four thousand, seven hundred twenty-five".