425063521 has 2 divisors, whose sum is σ = 425063522. Its totient is φ = 425063520.

The previous prime is 425063489. The next prime is 425063579. The reversal of 425063521 is 125360524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374809600 + 50253921 = 19360^2 + 7089^2 .

It is a cyclic number.

It is not a de Polignac number, because 425063521 - 2⁵ = 425063489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425063521.

It is not a weakly prime, because it can be changed into another prime (425163521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212531760 + 212531761.

It is an arithmetic number, because the mean of its divisors is an integer number (212531761).

Almost surely, 2^425063521 is an apocalyptic number.

It is an amenable number.

425063521 is a deficient number, since it is larger than the sum of its proper divisors (1).

425063521 is an equidigital number, since it uses as much as digits as its factorization.

425063521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 425063521 is about 20617.0686810710. The cubic root of 425063521 is about 751.8847535637.

The spelling of 425063521 in words is "four hundred twenty-five million, sixty-three thousand, five hundred twenty-one".