25552755749 has 4 divisors (see below), whose sum is σ = 25553319936. Its totient is φ = 25552191564.

The previous prime is 25552755713. The next prime is 25552755769. The reversal of 25552755749 is 94755725552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25552755749 - 2²⁰ = 25551707173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25552755694 and 25552755703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552755769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207599 + ... + 306924.

It is an arithmetic number, because the mean of its divisors is an integer number (6388329984).

Almost surely, 2^25552755749 is an apocalyptic number.

It is an amenable number.

25552755749 is a deficient number, since it is larger than the sum of its proper divisors (564187).

25552755749 is an equidigital number, since it uses as much as digits as its factorization.

25552755749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564186.

The product of its digits is 22050000, while the sum is 56.

The spelling of 25552755749 in words is "twenty-five billion, five hundred fifty-two million, seven hundred fifty-five thousand, seven hundred forty-nine".