25550451299 has 4 divisors (see below), whose sum is σ = 26173633080. Its totient is φ = 24927269520.

The previous prime is 25550451259. The next prime is 25550451319. The reversal of 25550451299 is 99215405552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25550451299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25550451259) 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, 311590829 + ... + 311590910.

It is an arithmetic number, because the mean of its divisors is an integer number (6543408270).

Almost surely, 2^25550451299 is an apocalyptic number.

25550451299 is a deficient number, since it is larger than the sum of its proper divisors (623181781).

25550451299 is an equidigital number, since it uses as much as digits as its factorization.

25550451299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623181780.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 25550451299 in words is "twenty-five billion, five hundred fifty million, four hundred fifty-one thousand, two hundred ninety-nine".