25345032255540 has 72 divisors (see below), whose sum is σ = 78667836575328. Its totient is φ = 6601496771520.

The previous prime is 25345032255443. The next prime is 25345032255541. The reversal of 25345032255540 is 4555223054352.

25345032255540 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 50 + 3 + 2 + 2 + 55 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345032255541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1637268246 + ... + 1637283725.

It is an arithmetic number, because the mean of its divisors is an integer number (1092608841324).

Almost surely, 2^{25345032255540} is an apocalyptic number.

25345032255540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25345032255540 is an abundant number, since it is smaller than the sum of its proper divisors (53322804319788).

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

25345032255540 is a wasteful number, since it uses less digits than its factorization.

25345032255540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274552029 (or 3274552024 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 45.

The spelling of 25345032255540 in words is "twenty-five trillion, three hundred forty-five billion, thirty-two million, two hundred fifty-five thousand, five hundred forty".