25267538347 has 4 divisors (see below), whose sum is σ = 25517712096. Its totient is φ = 25017364600.

The previous prime is 25267538333. The next prime is 25267538357. The reversal of 25267538347 is 74383576252.

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

It is a cyclic number.

It is not a de Polignac number, because 25267538347 - 2¹⁵ = 25267505579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25267538294 and 25267538303.

It is not an unprimeable number, because it can be changed into a prime (25267538357) 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, 125086723 + ... + 125086924.

It is an arithmetic number, because the mean of its divisors is an integer number (6379428024).

Almost surely, 2^25267538347 is an apocalyptic number.

25267538347 is a deficient number, since it is larger than the sum of its proper divisors (250173749).

25267538347 is a wasteful number, since it uses less digits than its factorization.

25267538347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250173748.

The product of its digits is 8467200, while the sum is 52.

The spelling of 25267538347 in words is "twenty-five billion, two hundred sixty-seven million, five hundred thirty-eight thousand, three hundred forty-seven".