25538463 has 16 divisors (see below), whose sum is σ = 37920000. Its totient is φ = 16987320.

The previous prime is 25538459. The next prime is 25538483. The reversal of 25538463 is 36483552.

It is a happy number.

It is not a de Polignac number, because 25538463 - 2² = 25538459 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25538423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16288 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (2370000).

Almost surely, 2^25538463 is an apocalyptic number.

25538463 is a deficient number, since it is larger than the sum of its proper divisors (12381537).

25538463 is a wasteful number, since it uses less digits than its factorization.

25538463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2133 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 25538463 is about 5053.5594386531. The cubic root of 25538463 is about 294.4861801631.

The spelling of 25538463 in words is "twenty-five million, five hundred thirty-eight thousand, four hundred sixty-three".