25143422378 has 8 divisors (see below), whose sum is σ = 37719546372. Its totient is φ = 12570240256.

The previous prime is 25143422377. The next prime is 25143422383. The reversal of 25143422378 is 87322434152.

It can be written as a sum of positive squares in 2 ways, for example, as 25037682289 + 105740089 = 158233^2 + 10283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25143422378² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25143422377) 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 3 ways as a sum of consecutive naturals, for example, 713975 + ... + 748362.

Almost surely, 2^25143422378 is an apocalyptic number.

25143422378 is a deficient number, since it is larger than the sum of its proper divisors (12576123994).

25143422378 is a wasteful number, since it uses less digits than its factorization.

25143422378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470936.

The product of its digits is 322560, while the sum is 41.

The spelling of 25143422378 in words is "twenty-five billion, one hundred forty-three million, four hundred twenty-two thousand, three hundred seventy-eight".