25275278055505 has 16 divisors (see below), whose sum is σ = 31942735030080. Its totient is φ = 19146359403072.

The previous prime is 25275278055497. The next prime is 25275278055509. The reversal of 25275278055505 is 50555087257252.

It is a cyclic number.

It is not a de Polignac number, because 25275278055505 - 2³ = 25275278055497 is a prime.

It is a super-2 number, since 2×25275278055505² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25275278055505.

It is not an unprimeable number, because it can be changed into a prime (25275278055509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66760294 + ... + 67137823.

It is an arithmetic number, because the mean of its divisors is an integer number (1996420939380).

Almost surely, 2^{25275278055505} is an apocalyptic number.

It is an amenable number.

25275278055505 is a deficient number, since it is larger than the sum of its proper divisors (6667456974575).

25275278055505 is a wasteful number, since it uses less digits than its factorization.

25275278055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133900128.

The product of its (nonzero) digits is 49000000, while the sum is 58.

The spelling of 25275278055505 in words is "twenty-five trillion, two hundred seventy-five billion, two hundred seventy-eight million, fifty-five thousand, five hundred five".