25356261 has 8 divisors (see below), whose sum is σ = 38638144. Its totient is φ = 14489280.

The previous prime is 25356259. The next prime is 25356263. The reversal of 25356261 is 16265352.

It is an interprime number because it is at equal distance from previous prime (25356259) and next prime (25356263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25356261 - 2¹ = 25356259 is a prime.

It is the 5036-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25356263) by changing a digit.

It is a nontrivial repunit in base 5035.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603700 + ... + 603741.

It is an arithmetic number, because the mean of its divisors is an integer number (4829768).

Almost surely, 2^25356261 is an apocalyptic number.

25356261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25356261 is a deficient number, since it is larger than the sum of its proper divisors (13281883).

25356261 is a wasteful number, since it uses less digits than its factorization.

25356261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207451.

The product of its digits is 10800, while the sum is 30.

The square root of 25356261 is about 5035.5000744713. The cubic root of 25356261 is about 293.7841791526.

Subtracting from 25356261 its reverse (16265352), we obtain a palindrome (9090909).

The spelling of 25356261 in words is "twenty-five million, three hundred fifty-six thousand, two hundred sixty-one".