401776625 has 8 divisors (see below), whose sum is σ = 501417384. Its totient is φ = 321421200.

The previous prime is 401776601. The next prime is 401776637. The reversal of 401776625 is 526677104.

It can be written as a sum of positive squares in 4 ways, for example, as 68823616 + 332953009 = 8296^2 + 18247^2 .

It is not a de Polignac number, because 401776625 - 2⁸ = 401776369 is a prime.

It is a super-2 number, since 2×401776625² = 322848912792781250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606982 + ... + 1607231.

It is an arithmetic number, because the mean of its divisors is an integer number (62677173).

Almost surely, 2^401776625 is an apocalyptic number.

It is an amenable number.

401776625 is a deficient number, since it is larger than the sum of its proper divisors (99640759).

401776625 is an equidigital number, since it uses as much as digits as its factorization.

401776625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214228 (or 3214218 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 401776625 is about 20044.3664155293. The cubic root of 401776625 is about 737.8955457417.

The spelling of 401776625 in words is "four hundred one million, seven hundred seventy-six thousand, six hundred twenty-five".