25456803403 has 6 divisors (see below), whose sum is σ = 26364894764. Its totient is φ = 24578981784.

The previous prime is 25456803401. The next prime is 25456803413. The reversal of 25456803403 is 30430865452.

It is not a de Polignac number, because 25456803403 - 2¹ = 25456803401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25456803401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15134001 + ... + 15135682.

Almost surely, 2^25456803403 is an apocalyptic number.

25456803403 is a deficient number, since it is larger than the sum of its proper divisors (908091361).

25456803403 is an equidigital number, since it uses as much as digits as its factorization.

25456803403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30269741 (or 30269712 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 25456803403 in words is "twenty-five billion, four hundred fifty-six million, eight hundred three thousand, four hundred three".