425532521 has 2 divisors, whose sum is σ = 425532522. Its totient is φ = 425532520.

The previous prime is 425532509. The next prime is 425532551. The reversal of 425532521 is 125235524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311875600 + 113656921 = 17660^2 + 10661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425532521 is a prime.

It is equal to p_22623275 and since 425532521 and 22623275 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (425532551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212766260 + 212766261.

It is an arithmetic number, because the mean of its divisors is an integer number (212766261).

Almost surely, 2^425532521 is an apocalyptic number.

It is an amenable number.

425532521 is a deficient number, since it is larger than the sum of its proper divisors (1).

425532521 is an equidigital number, since it uses as much as digits as its factorization.

425532521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 425532521 is about 20628.4396162192. The cubic root of 425532521 is about 752.1611862354.

The spelling of 425532521 in words is "four hundred twenty-five million, five hundred thirty-two thousand, five hundred twenty-one".