25488937771 has 4 divisors (see below), whose sum is σ = 27806113944. Its totient is φ = 23171761600.

The previous prime is 25488937757. The next prime is 25488937829. The reversal of 25488937771 is 17773988452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25488937771 - 2⁵ = 25488937739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25488937711) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1158588070 + ... + 1158588091.

It is an arithmetic number, because the mean of its divisors is an integer number (6951528486).

Almost surely, 2^25488937771 is an apocalyptic number.

25488937771 is a deficient number, since it is larger than the sum of its proper divisors (2317176173).

25488937771 is a wasteful number, since it uses less digits than its factorization.

25488937771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317176172.

The product of its digits is 23708160, while the sum is 61.

The spelling of 25488937771 in words is "twenty-five billion, four hundred eighty-eight million, nine hundred thirty-seven thousand, seven hundred seventy-one".