425616401 has 6 divisors (see below), whose sum is σ = 495104850. Its totient is φ = 364814016.

The previous prime is 425616313. The next prime is 425616407. The reversal of 425616401 is 104616524.

It can be written as a sum of positive squares in only one way, i.e., 422097025 + 3519376 = 20545^2 + 1876^2 .

It is not a de Polignac number, because 425616401 - 2²² = 421422097 is a prime.

It is a super-2 number, since 2×425616401² = 362298641600385602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425616407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4342976 + ... + 4343073.

It is an arithmetic number, because the mean of its divisors is an integer number (82517475).

Almost surely, 2^425616401 is an apocalyptic number.

It is an amenable number.

425616401 is a deficient number, since it is larger than the sum of its proper divisors (69488449).

425616401 is an equidigital number, since it uses as much as digits as its factorization.

425616401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8686063 (or 8686056 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 425616401 is about 20630.4726315225. The cubic root of 425616401 is about 752.2106044210.

The spelling of 425616401 in words is "four hundred twenty-five million, six hundred sixteen thousand, four hundred one".