25213136 has 40 divisors (see below), whose sum is σ = 53850720. Its totient is φ = 11362176.

The previous prime is 25213127. The next prime is 25213141. The reversal of 25213136 is 63131252.

25213136 = T₁₉₆₃ + T₁₉₆₄ + ... + T₁₉₇₅.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7535 + ... + 10353.

It is an arithmetic number, because the mean of its divisors is an integer number (1346268).

Almost surely, 2^25213136 is an apocalyptic number.

25213136 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 25213136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26925360).

25213136 is an abundant number, since it is smaller than the sum of its proper divisors (28637584).

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

25213136 is a wasteful number, since it uses less digits than its factorization.

25213136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883 (or 2877 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 25213136 is about 5021.2683656622. The cubic root of 25213136 is about 293.2303747937.

Adding to 25213136 its reverse (63131252), we get a palindrome (88344388).

The spelling of 25213136 in words is "twenty-five million, two hundred thirteen thousand, one hundred thirty-six".