25505135034 has 32 divisors (see below), whose sum is σ = 51791840640. Its totient is φ = 8371742400.

The previous prime is 25505134979. The next prime is 25505135041. The reversal of 25505135034 is 43053150552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25505134986 and 25505135004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317044 + ... + 389264.

It is an arithmetic number, because the mean of its divisors is an integer number (1618495020).

Almost surely, 2^25505135034 is an apocalyptic number.

25505135034 is an abundant number, since it is smaller than the sum of its proper divisors (26286705606).

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

25505135034 is a wasteful number, since it uses less digits than its factorization.

25505135034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73126.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 25505135034 its reverse (43053150552), we get a palindrome (68558285586).

The spelling of 25505135034 in words is "twenty-five billion, five hundred five million, one hundred thirty-five thousand, thirty-four".