403825657 has 2 divisors, whose sum is σ = 403825658. Its totient is φ = 403825656.

The previous prime is 403825649. The next prime is 403825693. The reversal of 403825657 is 756528304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348531561 + 55294096 = 18669^2 + 7436^2 .

It is a cyclic number.

It is not a de Polignac number, because 403825657 - 2³ = 403825649 is a prime.

It is a super-2 number, since 2×403825657² = 326150322502963298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (403825607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201912828 + 201912829.

It is an arithmetic number, because the mean of its divisors is an integer number (201912829).

Almost surely, 2^403825657 is an apocalyptic number.

It is an amenable number.

403825657 is a deficient number, since it is larger than the sum of its proper divisors (1).

403825657 is an equidigital number, since it uses as much as digits as its factorization.

403825657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 403825657 is about 20095.4138300260. The cubic root of 403825657 is about 739.1478241092.

The spelling of 403825657 in words is "four hundred three million, eight hundred twenty-five thousand, six hundred fifty-seven".