25814545347 has 4 divisors (see below), whose sum is σ = 34419393800. Its totient is φ = 17209696896.

The previous prime is 25814545343. The next prime is 25814545391. The reversal of 25814545347 is 74354541852.

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

It is not a de Polignac number, because 25814545347 - 2² = 25814545343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25814545296 and 25814545305.

It is not an unprimeable number, because it can be changed into a prime (25814545343) 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, 4302424222 + ... + 4302424227.

It is an arithmetic number, because the mean of its divisors is an integer number (8604848450).

Almost surely, 2^25814545347 is an apocalyptic number.

25814545347 is a deficient number, since it is larger than the sum of its proper divisors (8604848453).

25814545347 is an equidigital number, since it uses as much as digits as its factorization.

25814545347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8604848452.

The product of its digits is 2688000, while the sum is 48.

The spelling of 25814545347 in words is "twenty-five billion, eight hundred fourteen million, five hundred forty-five thousand, three hundred forty-seven".