252634325627421 has 48 divisors (see below), whose sum is σ = 385149511738992. Its totient is φ = 159407328153600.

The previous prime is 252634325627413. The next prime is 252634325627461. The reversal of 252634325627421 is 124726523436252.

252634325627421 is a `hidden beast` number, since 2 + 5 + 2 + 6 + 3 + 4 + 3 + 2 + 5 + 627 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 39737453175225 + 212896872452196 = 6303765^2 + 14590986^2 .

It is not a de Polignac number, because 252634325627421 - 2³ = 252634325627413 is a prime.

It is a super-2 number, since 2×252634325627421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252634325627401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75231520 + ... + 78517833.

It is an arithmetic number, because the mean of its divisors is an integer number (8023948161229).

Almost surely, 2^{252634325627421} is an apocalyptic number.

It is an amenable number.

252634325627421 is a deficient number, since it is larger than the sum of its proper divisors (132515186111571).

252634325627421 is a wasteful number, since it uses less digits than its factorization.

252634325627421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153749534 (or 153749531 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 54.

The spelling of 252634325627421 in words is "two hundred fifty-two trillion, six hundred thirty-four billion, three hundred twenty-five million, six hundred twenty-seven thousand, four hundred twenty-one".