25275230136 has 192 divisors, whose sum is σ = 76066317600. Its totient is φ = 7531398144.

The previous prime is 25275230089. The next prime is 25275230159. The reversal of 25275230136 is 63103257252.

25275230136 is a `hidden beast` number, since 25 + 275 + 230 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25275230136.

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, 7929135 + ... + 7932321.

Almost surely, 2^25275230136 is an apocalyptic number.

25275230136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25275230136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38033158800).

25275230136 is an abundant number, since it is smaller than the sum of its proper divisors (50791087464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25275230136 is a wasteful number, since it uses less digits than its factorization.

25275230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Adding to 25275230136 its reverse (63103257252), we get a palindrome (88378487388).

The spelling of 25275230136 in words is "twenty-five billion, two hundred seventy-five million, two hundred thirty thousand, one hundred thirty-six".