25255523293 has 96 divisors (see below), whose sum is σ = 35841206016. Its totient is φ = 17297280000.

The previous prime is 25255523287. The next prime is 25255523297. The reversal of 25255523293 is 39232555252.

It is a de Polignac number, because none of the positive numbers 2^k-25255523293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255523297) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19411743 + ... + 19413043.

It is an arithmetic number, because the mean of its divisors is an integer number (373345896).

Almost surely, 2^25255523293 is an apocalyptic number.

It is an amenable number.

25255523293 is a deficient number, since it is larger than the sum of its proper divisors (10585682723).

25255523293 is a wasteful number, since it uses less digits than its factorization.

25255523293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1416 counting only the distinct ones).

The product of its digits is 810000, while the sum is 43.

The spelling of 25255523293 in words is "twenty-five billion, two hundred fifty-five million, five hundred twenty-three thousand, two hundred ninety-three".