406254025 has 6 divisors (see below), whose sum is σ = 503755022. Its totient is φ = 325003200.

The previous prime is 406254019. The next prime is 406254047. The reversal of 406254025 is 520452604.

It can be written as a sum of positive squares in 3 ways, for example, as 3810304 + 402443721 = 1952^2 + 20061^2 .

It is not a de Polignac number, because 406254025 - 2²³ = 397865417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406253984 and 406254002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8125056 + ... + 8125105.

Almost surely, 2^406254025 is an apocalyptic number.

It is an amenable number.

406254025 is a deficient number, since it is larger than the sum of its proper divisors (97500997).

406254025 is a wasteful number, since it uses less digits than its factorization.

406254025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16250171 (or 16250166 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 406254025 is about 20155.7442184604. The cubic root of 406254025 is about 740.6264630521.

The spelling of 406254025 in words is "four hundred six million, two hundred fifty-four thousand, twenty-five".