25479213583 has 4 divisors (see below), whose sum is σ = 25679837440. Its totient is φ = 25278589728.

The previous prime is 25479213563. The next prime is 25479213619. The reversal of 25479213583 is 38531297452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25479213583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25479213563) 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, 100311738 + ... + 100311991.

It is an arithmetic number, because the mean of its divisors is an integer number (6419959360).

Almost surely, 2^25479213583 is an apocalyptic number.

25479213583 is a deficient number, since it is larger than the sum of its proper divisors (200623857).

25479213583 is a wasteful number, since it uses less digits than its factorization.

25479213583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200623856.

The product of its digits is 1814400, while the sum is 49.

The spelling of 25479213583 in words is "twenty-five billion, four hundred seventy-nine million, two hundred thirteen thousand, five hundred eighty-three".