252425647 has 2 divisors, whose sum is σ = 252425648. Its totient is φ = 252425646.

The previous prime is 252425633. The next prime is 252425669. The reversal of 252425647 is 746524252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252425647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252425617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126212823 + 126212824.

It is an arithmetic number, because the mean of its divisors is an integer number (126212824).

Almost surely, 2^252425647 is an apocalyptic number.

252425647 is a deficient number, since it is larger than the sum of its proper divisors (1).

252425647 is an equidigital number, since it uses as much as digits as its factorization.

252425647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 37.

The square root of 252425647 is about 15887.9088303024. The cubic root of 252425647 is about 631.9913866462.

Adding to 252425647 its reverse (746524252), we get a palindrome (998949899).

The spelling of 252425647 in words is "two hundred fifty-two million, four hundred twenty-five thousand, six hundred forty-seven".