25523481 has 8 divisors (see below), whose sum is σ = 34089280. Its totient is φ = 16986672.

The previous prime is 25523471. The next prime is 25523483. The reversal of 25523481 is 18432552.

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

It is not a de Polignac number, because 25523481 - 2⁹ = 25522969 is a prime.

It is a super-2 number, since 2×25523481² = 1302896164714722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25523483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5101 + ... + 8778.

It is an arithmetic number, because the mean of its divisors is an integer number (4261160).

Almost surely, 2^25523481 is an apocalyptic number.

It is an amenable number.

25523481 is a deficient number, since it is larger than the sum of its proper divisors (8565799).

25523481 is a wasteful number, since it uses less digits than its factorization.

25523481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14495.

The product of its digits is 9600, while the sum is 30.

The square root of 25523481 is about 5052.0768996523. The cubic root of 25523481 is about 294.4285826615.

The spelling of 25523481 in words is "twenty-five million, five hundred twenty-three thousand, four hundred eighty-one".