25162316042440 has 16 divisors (see below), whose sum is σ = 56615211095580. Its totient is φ = 10064926416960.

The previous prime is 25162316042431. The next prime is 25162316042459. The reversal of 25162316042440 is 4424061326152.

It can be written as a sum of positive squares in 2 ways, for example, as 24604357837284 + 557958205156 = 4960278^2 + 746966^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 629057901061 = 25162316042440 / (2 + 5 + 1 + 6 + 2 + 3 + 1 + 6 + 0 + 4 + 2 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 25162316042393 and 25162316042402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314528950491 + ... + 314528950570.

Almost surely, 2^{25162316042440} is an apocalyptic number.

25162316042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25162316042440 is an abundant number, since it is smaller than the sum of its proper divisors (31452895053140).

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

25162316042440 is a wasteful number, since it uses less digits than its factorization.

25162316042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629057901072 (or 629057901068 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 25162316042440 its reverse (4424061326152), we get a palindrome (29586377368592).

The spelling of 25162316042440 in words is "twenty-five trillion, one hundred sixty-two billion, three hundred sixteen million, forty-two thousand, four hundred forty".