25609470004 has 24 divisors (see below), whose sum is σ = 47471303880. Its totient is φ = 12046826496.

The previous prime is 25609469981. The next prime is 25609470049. The reversal of 25609470004 is 40007490652.

It can be written as a sum of positive squares in 4 ways, for example, as 12132581904 + 13476888100 = 110148^2 + 116090^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106002 + ... + 249910.

It is an arithmetic number, because the mean of its divisors is an integer number (1977970995).

Almost surely, 2^25609470004 is an apocalyptic number.

It is an amenable number.

25609470004 is a deficient number, since it is larger than the sum of its proper divisors (21861833876).

25609470004 is a wasteful number, since it uses less digits than its factorization.

25609470004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146547 (or 146545 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 25609470004 in words is "twenty-five billion, six hundred nine million, four hundred seventy thousand, four".