25523381 has 8 divisors (see below), whose sum is σ = 28126560. Its totient is φ = 23011632.

The previous prime is 25523363. The next prime is 25523401. The reversal of 25523381 is 18332552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25523381 is a prime.

It is a super-2 number, since 2×25523381² = 1302885955342322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25520381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22271 + ... + 23388.

It is an arithmetic number, because the mean of its divisors is an integer number (3515820).

Almost surely, 2^25523381 is an apocalyptic number.

It is an amenable number.

25523381 is a deficient number, since it is larger than the sum of its proper divisors (2603179).

25523381 is a wasteful number, since it uses less digits than its factorization.

25523381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45715.

The product of its digits is 7200, while the sum is 29.

The square root of 25523381 is about 5052.0670027227. The cubic root of 25523381 is about 294.4281981411.

The spelling of 25523381 in words is "twenty-five million, five hundred twenty-three thousand, three hundred eighty-one".