25040300040 has 128 divisors (see below), whose sum is σ = 95391648000. Its totient is φ = 5723495424.

The previous prime is 25040300029. The next prime is 25040300053. The reversal of 25040300040 is 4000304052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25040299986 and 25040300022.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1648545 + ... + 1663664.

It is an arithmetic number, because the mean of its divisors is an integer number (745247250).

Almost surely, 2^25040300040 is an apocalyptic number.

25040300040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25040300040 is an abundant number, since it is smaller than the sum of its proper divisors (70351347960).

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

25040300040 is a wasteful number, since it uses less digits than its factorization.

25040300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312236 (or 3312226 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

Adding to 25040300040 its reverse (4000304052), we get a palindrome (29040604092).

The spelling of 25040300040 in words is "twenty-five billion, forty million, three hundred thousand, forty".