25422205140 has 36 divisors (see below), whose sum is σ = 77114022804. Its totient is φ = 6779254656.

The previous prime is 25422205087. The next prime is 25422205153. The reversal of 25422205140 is 4150222452.

25422205140 is a `hidden beast` number, since 25 + 422 + 205 + 14 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7956996804 + 17465208336 = 89202^2 + 132156^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70617057 + ... + 70617416.

It is an arithmetic number, because the mean of its divisors is an integer number (2142056189).

Almost surely, 2^25422205140 is an apocalyptic number.

25422205140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25422205140 is an abundant number, since it is smaller than the sum of its proper divisors (51691817664).

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

25422205140 is a wasteful number, since it uses less digits than its factorization.

25422205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141234488 (or 141234483 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 25422205140 its reverse (4150222452), we get a palindrome (29572427592).

The spelling of 25422205140 in words is "twenty-five billion, four hundred twenty-two million, two hundred five thousand, one hundred forty".