402207425 has 12 divisors (see below), whose sum is σ = 507192240. Its totient is φ = 316311120.

The previous prime is 402207419. The next prime is 402207433. The reversal of 402207425 is 524702204.

It is not a de Polignac number, because 402207425 - 2¹⁸ = 401945281 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402207394 and 402207403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134867 + ... + 137816.

It is an arithmetic number, because the mean of its divisors is an integer number (42266020).

Almost surely, 2^402207425 is an apocalyptic number.

It is an amenable number.

402207425 is a deficient number, since it is larger than the sum of its proper divisors (104984815).

402207425 is a wasteful number, since it uses less digits than its factorization.

402207425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272752 (or 272747 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 402207425 is about 20055.1096980296. The cubic root of 402207425 is about 738.1591846501.

Adding to 402207425 its reverse (524702204), we get a palindrome (926909629).

The spelling of 402207425 in words is "four hundred two million, two hundred seven thousand, four hundred twenty-five".