25275015140 has 12 divisors (see below), whose sum is σ = 53077531836. Its totient is φ = 10110006048.

The previous prime is 25275015137. The next prime is 25275015223. The reversal of 25275015140 is 4151057252.

It can be written as a sum of positive squares in 2 ways, for example, as 8118730816 + 17156284324 = 90104^2 + 130982^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25275015097 and 25275015106.

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 3 ways as a sum of consecutive naturals, for example, 631875359 + ... + 631875398.

It is an arithmetic number, because the mean of its divisors is an integer number (4423127653).

Almost surely, 2^25275015140 is an apocalyptic number.

25275015140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25275015140 is an abundant number, since it is smaller than the sum of its proper divisors (27802516696).

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

25275015140 is a wasteful number, since it uses less digits than its factorization.

25275015140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263750766 (or 1263750764 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 25275015140 in words is "twenty-five billion, two hundred seventy-five million, fifteen thousand, one hundred forty".