52451363225 has 24 divisors (see below), whose sum is σ = 66003747960. Its totient is φ = 41340395520.

The previous prime is 52451363221. The next prime is 52451363267. The reversal of 52451363225 is 52236315425.

It can be written as a sum of positive squares in 12 ways, for example, as 39132356761 + 13319006464 = 197819^2 + 115408^2 .

It is not a de Polignac number, because 52451363225 - 2² = 52451363221 is a prime.

It is a super-2 number, since 2×52451363225² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52451363221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1679957 + ... + 1710893.

It is an arithmetic number, because the mean of its divisors is an integer number (2750156165).

Almost surely, 2^52451363225 is an apocalyptic number.

It is an amenable number.

52451363225 is a deficient number, since it is larger than the sum of its proper divisors (13552384735).

52451363225 is a wasteful number, since it uses less digits than its factorization.

52451363225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31949 (or 31944 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

The spelling of 52451363225 in words is "fifty-two billion, four hundred fifty-one million, three hundred sixty-three thousand, two hundred twenty-five".