25957481 has 8 divisors (see below), whose sum is σ = 28380000. Its totient is φ = 23545440.

The previous prime is 25957471. The next prime is 25957483. The reversal of 25957481 is 18475952.

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

It is a cyclic number.

It is not a de Polignac number, because 25957481 - 2⁶ = 25957417 is a prime.

It is a super-2 number, since 2×25957481² = 1347581639730722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25957483) 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, 3125 + ... + 7853.

It is an arithmetic number, because the mean of its divisors is an integer number (3547500).

Almost surely, 2^25957481 is an apocalyptic number.

It is an amenable number.

25957481 is a deficient number, since it is larger than the sum of its proper divisors (2422519).

25957481 is a wasteful number, since it uses less digits than its factorization.

25957481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239.

The product of its digits is 100800, while the sum is 41.

The square root of 25957481 is about 5094.8484766478. The cubic root of 25957481 is about 296.0880285115.

The spelling of 25957481 in words is "twenty-five million, nine hundred fifty-seven thousand, four hundred eighty-one".