25048308449 has 4 divisors (see below), whose sum is σ = 25391436036. Its totient is φ = 24705180864.

The previous prime is 25048308431. The next prime is 25048308547. The reversal of 25048308449 is 94480384052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15089665600 + 9958642849 = 122840^2 + 99793^2 .

It is a cyclic number.

It is not a de Polignac number, because 25048308449 - 2²⁸ = 24779872993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25048308409) 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, 171563684 + ... + 171563829.

It is an arithmetic number, because the mean of its divisors is an integer number (6347859009).

Almost surely, 2^25048308449 is an apocalyptic number.

It is an amenable number.

25048308449 is a deficient number, since it is larger than the sum of its proper divisors (343127587).

25048308449 is an equidigital number, since it uses as much as digits as its factorization.

25048308449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343127586.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 25048308449 in words is "twenty-five billion, forty-eight million, three hundred eight thousand, four hundred forty-nine".