25138775275 has 24 divisors (see below), whose sum is σ = 31536552960. Its totient is φ = 19876755360.

The previous prime is 25138775257. The next prime is 25138775281. The reversal of 25138775275 is 57257783152.

It is not a de Polignac number, because 25138775275 - 2⁵ = 25138775243 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1163622 + ... + 1185028.

It is an arithmetic number, because the mean of its divisors is an integer number (1314023040).

Almost surely, 2^25138775275 is an apocalyptic number.

25138775275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25138775275 is a deficient number, since it is larger than the sum of its proper divisors (6397777685).

25138775275 is a wasteful number, since it uses less digits than its factorization.

25138775275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21963 (or 21958 counting only the distinct ones).

The product of its digits is 4116000, while the sum is 52.

It can be divided in two parts, 2513877 and 5275, that added together give a palindrome (2519152).

The spelling of 25138775275 in words is "twenty-five billion, one hundred thirty-eight million, seven hundred seventy-five thousand, two hundred seventy-five".