425152421 has 2 divisors, whose sum is σ = 425152422. Its totient is φ = 425152420.

The previous prime is 425152397. The next prime is 425152423. The reversal of 425152421 is 124251524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412293025 + 12859396 = 20305^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 425152421 - 2¹⁴ = 425136037 is a prime.

It is a super-2 number, since 2×425152421² = 361509162164322482, which contains 22 as substring.

Together with 425152423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425152423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212576210 + 212576211.

It is an arithmetic number, because the mean of its divisors is an integer number (212576211).

Almost surely, 2^425152421 is an apocalyptic number.

It is an amenable number.

425152421 is a deficient number, since it is larger than the sum of its proper divisors (1).

425152421 is an equidigital number, since it uses as much as digits as its factorization.

425152421 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 425152421 is about 20619.2245489495. The cubic root of 425152421 is about 751.9371676085.

The spelling of 425152421 in words is "four hundred twenty-five million, one hundred fifty-two thousand, four hundred twenty-one".