25255135240 has 32 divisors (see below), whose sum is σ = 57172682880. Its totient is φ = 10040075712.

The previous prime is 25255135219. The next prime is 25255135277. The reversal of 25255135240 is 4253155252.

It is a junction number, because it is equal to n+sod(n) for n = 25255135196 and 25255135205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930224 + ... + 1943263.

It is an arithmetic number, because the mean of its divisors is an integer number (1786646340).

Almost surely, 2^25255135240 is an apocalyptic number.

25255135240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25255135240 is an abundant number, since it is smaller than the sum of its proper divisors (31917547640).

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

25255135240 is a wasteful number, since it uses less digits than its factorization.

25255135240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873661 (or 3873657 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 25255135240 in words is "twenty-five billion, two hundred fifty-five million, one hundred thirty-five thousand, two hundred forty".