425124521 has 2 divisors, whose sum is σ = 425124522. Its totient is φ = 425124520.

The previous prime is 425124503. The next prime is 425124533. The reversal of 425124521 is 125421524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247275625 + 177848896 = 15725^2 + 13336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425124521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425124551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212562260 + 212562261.

It is an arithmetic number, because the mean of its divisors is an integer number (212562261).

Almost surely, 2^425124521 is an apocalyptic number.

It is an amenable number.

425124521 is a deficient number, since it is larger than the sum of its proper divisors (1).

425124521 is an equidigital number, since it uses as much as digits as its factorization.

425124521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200, while the sum is 26.

The square root of 425124521 is about 20618.5479847636. The cubic root of 425124521 is about 751.9207189931.

The spelling of 425124521 in words is "four hundred twenty-five million, one hundred twenty-four thousand, five hundred twenty-one".