25253747747 has 16 divisors (see below), whose sum is σ = 26242769280. Its totient is φ = 24283584000.

The previous prime is 25253747693. The next prime is 25253747749. The reversal of 25253747747 is 74774735252.

It is a cyclic number.

It is not a de Polignac number, because 25253747747 - 2²⁴ = 25236970531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25253747749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1940153 + ... + 1953125.

It is an arithmetic number, because the mean of its divisors is an integer number (1640173080).

Almost surely, 2^25253747747 is an apocalyptic number.

25253747747 is a deficient number, since it is larger than the sum of its proper divisors (989021533).

25253747747 is a wasteful number, since it uses less digits than its factorization.

25253747747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694.

The product of its digits is 11524800, while the sum is 53.

The spelling of 25253747747 in words is "twenty-five billion, two hundred fifty-three million, seven hundred forty-seven thousand, seven hundred forty-seven".