25335445040 has 40 divisors (see below), whose sum is σ = 59203956240. Its totient is φ = 10082729216.

The previous prime is 25335445039. The next prime is 25335445129. The reversal of 25335445040 is 4054453352.

It is a tau number, because it is divible by the number of its divisors (40).

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, 788030 + ... + 819549.

It is an arithmetic number, because the mean of its divisors is an integer number (1480098906).

Almost surely, 2^25335445040 is an apocalyptic number.

25335445040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25335445040 is an abundant number, since it is smaller than the sum of its proper divisors (33868511200).

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

25335445040 is a wasteful number, since it uses less digits than its factorization.

25335445040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607789 (or 1607783 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 25335445040 its reverse (4054453352), we get a palindrome (29389898392).

The spelling of 25335445040 in words is "twenty-five billion, three hundred thirty-five million, four hundred forty-five thousand, forty".