25360041640 has 32 divisors (see below), whose sum is σ = 57232510560. Its totient is φ = 10113364800.

The previous prime is 25360041593. The next prime is 25360041643. The reversal of 25360041640 is 4614006352.

It is not an unprimeable number, because it can be changed into a prime (25360041643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944466 + ... + 970945.

It is an arithmetic number, because the mean of its divisors is an integer number (1788515955).

Almost surely, 2^25360041640 is an apocalyptic number.

25360041640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25360041640 is an abundant number, since it is smaller than the sum of its proper divisors (31872468920).

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

25360041640 is a wasteful number, since it uses less digits than its factorization.

25360041640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915753 (or 1915749 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 25360041640 its reverse (4614006352), we get a palindrome (29974047992).

The spelling of 25360041640 in words is "twenty-five billion, three hundred sixty million, forty-one thousand, six hundred forty".