25250275278 has 24 divisors (see below), whose sum is σ = 54883730928. Its totient is φ = 8389865952.

The previous prime is 25250275249. The next prime is 25250275289. The reversal of 25250275278 is 87257205252.

25250275278 is a `hidden beast` number, since 2 + 5 + 2 + 502 + 75 + 2 + 78 = 666.

It is a super-2 number, since 2×25250275278² (a number of 22 digits) contains 22 as substring.

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, 2235250 + ... + 2246517.

It is an arithmetic number, because the mean of its divisors is an integer number (2286822122).

Almost surely, 2^25250275278 is an apocalyptic number.

25250275278 is an abundant number, since it is smaller than the sum of its proper divisors (29633455650).

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

25250275278 is a wasteful number, since it uses less digits than its factorization.

25250275278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482088 (or 4482085 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The spelling of 25250275278 in words is "twenty-five billion, two hundred fifty million, two hundred seventy-five thousand, two hundred seventy-eight".