25277527540 has 48 divisors (see below), whose sum is σ = 54544915152. Its totient is φ = 9832790016.

The previous prime is 25277527529. The next prime is 25277527547. The reversal of 25277527540 is 4572577252.

It can be written as a sum of positive squares in 8 ways, for example, as 2345271184 + 22932256356 = 48428^2 + 151434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25277527547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1689372 + ... + 1704268.

It is an arithmetic number, because the mean of its divisors is an integer number (1136352399).

Almost surely, 2^25277527540 is an apocalyptic number.

25277527540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25277527540 is an abundant number, since it is smaller than the sum of its proper divisors (29267387612).

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

25277527540 is a wasteful number, since it uses less digits than its factorization.

25277527540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17236 (or 17234 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 46.

The spelling of 25277527540 in words is "twenty-five billion, two hundred seventy-seven million, five hundred twenty-seven thousand, five hundred forty".