25511280275 has 24 divisors (see below), whose sum is σ = 35166332544. Its totient is φ = 18231379200.

The previous prime is 25511280247. The next prime is 25511280281. The reversal of 25511280275 is 57208211552.

It is not a de Polignac number, because 25511280275 - 2²⁰ = 25510231699 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255994 + ... + 1276143.

It is an arithmetic number, because the mean of its divisors is an integer number (1465263856).

Almost surely, 2^25511280275 is an apocalyptic number.

25511280275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25511280275 is a deficient number, since it is larger than the sum of its proper divisors (9655052269).

25511280275 is a wasteful number, since it uses less digits than its factorization.

25511280275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532191 (or 2532186 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 38.

The spelling of 25511280275 in words is "twenty-five billion, five hundred eleven million, two hundred eighty thousand, two hundred seventy-five".