25040502340 has 192 divisors, whose sum is σ = 64208793600. Its totient is φ = 8189475840.

The previous prime is 25040502323. The next prime is 25040502349. The reversal of 25040502340 is 4320504052.

It is not an unprimeable number, because it can be changed into a prime (25040502349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15523374 + ... + 15524986.

It is an arithmetic number, because the mean of its divisors is an integer number (334420800).

Almost surely, 2^25040502340 is an apocalyptic number.

25040502340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25040502340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32104396800).

25040502340 is an abundant number, since it is smaller than the sum of its proper divisors (39168291260).

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

25040502340 is a wasteful number, since it uses less digits than its factorization.

25040502340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 25040502340 in words is "twenty-five billion, forty million, five hundred two thousand, three hundred forty".