25229550008 has 32 divisors (see below), whose sum is σ = 50950846800. Its totient is φ = 11642907648.

The previous prime is 25229549987. The next prime is 25229550013. The reversal of 25229550008 is 80005592252.

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, 1485935 + ... + 1502817.

Almost surely, 2^25229550008 is an apocalyptic number.

It is an amenable number.

25229550008 is an abundant number, since it is smaller than the sum of its proper divisors (25721296792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25229550008 is a wasteful number, since it uses less digits than its factorization.

25229550008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31271 (or 31267 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 25229550008 in words is "twenty-five billion, two hundred twenty-nine million, five hundred fifty thousand, eight".