425603403 has 20 divisors (see below), whose sum is σ = 646561080. Its totient is φ = 278923392.

The previous prime is 425603393. The next prime is 425603447. The reversal of 425603403 is 304306524.

425603403 is a `hidden beast` number, since 4 + 256 + 0 + 3 + 403 = 666.

It is not a de Polignac number, because 425603403 - 2¹⁶ = 425537867 is a prime.

It is a super-2 number, since 2×425603403² = 362276513290360818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (425603473) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39750 + ... + 49307.

It is an arithmetic number, because the mean of its divisors is an integer number (32328054).

Almost surely, 2^425603403 is an apocalyptic number.

425603403 is a deficient number, since it is larger than the sum of its proper divisors (220957677).

425603403 is an equidigital number, since it uses as much as digits as its factorization.

425603403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89128 (or 89119 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 425603403 is about 20630.1576096742. The cubic root of 425603403 is about 752.2029470305.

Adding to 425603403 its reverse (304306524), we get a palindrome (729909927).

The spelling of 425603403 in words is "four hundred twenty-five million, six hundred three thousand, four hundred three".