25011015240 has 32 divisors (see below), whose sum is σ = 75033046080. Its totient is φ = 6669604032.

The previous prime is 25011015221. The next prime is 25011015251. The reversal of 25011015240 is 4251011052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104212444 + ... + 104212683.

It is an arithmetic number, because the mean of its divisors is an integer number (2344782690).

Almost surely, 2^25011015240 is an apocalyptic number.

25011015240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25011015240 is an abundant number, since it is smaller than the sum of its proper divisors (50022030840).

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

25011015240 is a wasteful number, since it uses less digits than its factorization.

25011015240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208425141 (or 208425137 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 25011015240 its reverse (4251011052), we get a palindrome (29262026292).

The spelling of 25011015240 in words is "twenty-five billion, eleven million, fifteen thousand, two hundred forty".