25814781130 has 8 divisors (see below), whose sum is σ = 46466606052. Its totient is φ = 10325912448.

The previous prime is 25814781127. The next prime is 25814781137. The reversal of 25814781130 is 3118741852.

It can be written as a sum of positive squares in 2 ways, for example, as 24771297321 + 1043483809 = 157389^2 + 32303^2 .

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

It is a super-4 number, since 4×25814781130⁴ (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (25814781137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290739047 + ... + 1290739066.

Almost surely, 2^25814781130 is an apocalyptic number.

25814781130 is a deficient number, since it is larger than the sum of its proper divisors (20651824922).

25814781130 is a wasteful number, since it uses less digits than its factorization.

25814781130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581478120.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 25814781130 in words is "twenty-five billion, eight hundred fourteen million, seven hundred eighty-one thousand, one hundred thirty".