25534331040 has 96 divisors (see below), whose sum is σ = 84666496320. Its totient is φ = 6450776064.

The previous prime is 25534330999. The next prime is 25534331063. The reversal of 25534331040 is 4013343552.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25534330989 and 25534331007.

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, 1390789 + ... + 1409028.

It is an arithmetic number, because the mean of its divisors is an integer number (881942670).

Almost surely, 2^25534331040 is an apocalyptic number.

25534331040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25534331040 is an abundant number, since it is smaller than the sum of its proper divisors (59132165280).

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

25534331040 is a wasteful number, since it uses less digits than its factorization.

25534331040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799854 (or 2799846 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 25534331040 its reverse (4013343552), we get a palindrome (29547674592).

The spelling of 25534331040 in words is "twenty-five billion, five hundred thirty-four million, three hundred thirty-one thousand, forty".