25513433325 has 48 divisors (see below), whose sum is σ = 46884370240. Its totient is φ = 13602738240.

The previous prime is 25513433303. The next prime is 25513433347. The reversal of 25513433325 is 52333431552.

It is an interprime number because it is at equal distance from previous prime (25513433303) and next prime (25513433347).

It is not a de Polignac number, because 25513433325 - 2⁸ = 25513433069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25513433325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4136694 + ... + 4142856.

Almost surely, 2^25513433325 is an apocalyptic number.

25513433325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25513433325 is a deficient number, since it is larger than the sum of its proper divisors (21370936915).

25513433325 is a wasteful number, since it uses less digits than its factorization.

25513433325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315 (or 12304 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

Adding to 25513433325 its reverse (52333431552), we get a palindrome (77846864877).

The spelling of 25513433325 in words is "twenty-five billion, five hundred thirteen million, four hundred thirty-three thousand, three hundred twenty-five".