25609745403 has 48 divisors (see below), whose sum is σ = 43682716800. Its totient is φ = 14704098480.

The previous prime is 25609745363. The next prime is 25609745407. The reversal of 25609745403 is 30454790652.

25609745403 is a `hidden beast` number, since 2 + 560 + 9 + 7 + 45 + 40 + 3 = 666.

It is not a de Polignac number, because 25609745403 - 2¹⁰ = 25609744379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25609745407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12213 + ... + 226646.

It is an arithmetic number, because the mean of its divisors is an integer number (910056600).

Almost surely, 2^25609745403 is an apocalyptic number.

25609745403 is a deficient number, since it is larger than the sum of its proper divisors (18072971397).

25609745403 is a wasteful number, since it uses less digits than its factorization.

25609745403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238917 (or 238892 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 25609745403 in words is "twenty-five billion, six hundred nine million, seven hundred forty-five thousand, four hundred three".