25550050004 has 24 divisors (see below), whose sum is σ = 46213568520. Its totient is φ = 12350572416.

The previous prime is 25550049983. The next prime is 25550050027. The reversal of 25550050004 is 40005005552.

It can be written as a sum of positive squares in 4 ways, for example, as 1788444100 + 23761605904 = 42290^2 + 154148^2 .

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, 526559 + ... + 573030.

It is an arithmetic number, because the mean of its divisors is an integer number (1925565355).

Almost surely, 2^25550050004 is an apocalyptic number.

It is an amenable number.

25550050004 is a deficient number, since it is larger than the sum of its proper divisors (20663518516).

25550050004 is a wasteful number, since it uses less digits than its factorization.

25550050004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099787 (or 1099785 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

Adding to 25550050004 its reverse (40005005552), we get a palindrome (65555055556).

The spelling of 25550050004 in words is "twenty-five billion, five hundred fifty million, fifty thousand, four".