25293469049 has 4 divisors (see below), whose sum is σ = 25295899236. Its totient is φ = 25291038864.

The previous prime is 25293468973. The next prime is 25293469093. The reversal of 25293469049 is 94096439252.

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 24101010025 + 1192459024 = 155245^2 + 34532^2 .

It is a cyclic number.

It is not a de Polignac number, because 25293469049 - 2¹² = 25293464953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25293469849) 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, 1199414 + ... + 1220319.

It is an arithmetic number, because the mean of its divisors is an integer number (6323974809).

Almost surely, 2^25293469049 is an apocalyptic number.

It is an amenable number.

25293469049 is a deficient number, since it is larger than the sum of its proper divisors (2430187).

25293469049 is a wasteful number, since it uses less digits than its factorization.

25293469049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430186.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 25293469049 in words is "twenty-five billion, two hundred ninety-three million, four hundred sixty-nine thousand, forty-nine".