25478185008 has 30 divisors (see below), whose sum is σ = 65821501564. Its totient is φ = 8492359712.

The previous prime is 25478184989. The next prime is 25478185037. The reversal of 25478185008 is 80058187452.

It is a super-2 number, since 2×25478185008² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1094353 + ... + 1117391.

Almost surely, 2^25478185008 is an apocalyptic number.

It is an amenable number.

25478185008 is an abundant number, since it is smaller than the sum of its proper divisors (40343316556).

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

25478185008 is an frugal number, since it uses more digits than its factorization.

25478185008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46089 (or 23044 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 48.

Multiplying 25478185008 by its sum of digits (48), we get a square (1222952880384 = 1105872²).

25478185008 divided by its sum of digits (48) gives a square (530795521 = 23039²).

The spelling of 25478185008 in words is "twenty-five billion, four hundred seventy-eight million, one hundred eighty-five thousand, eight".