105025254449 has 4 divisors (see below), whose sum is σ = 110552899440. Its totient is φ = 99497609460.

The previous prime is 105025254409. The next prime is 105025254461. The reversal of 105025254449 is 944452520501.

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 a de Polignac number, because none of the positive numbers 2^k-105025254449 is a prime.

It is a super-2 number, since 2×105025254449² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105025254409) 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, 2763822467 + ... + 2763822504.

It is an arithmetic number, because the mean of its divisors is an integer number (27638224860).

Almost surely, 2^105025254449 is an apocalyptic number.

105025254449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

105025254449 is a deficient number, since it is larger than the sum of its proper divisors (5527644991).

105025254449 is an equidigital number, since it uses as much as digits as its factorization.

105025254449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527644990.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 105025254449 in words is "one hundred five billion, twenty-five million, two hundred fifty-four thousand, four hundred forty-nine".