25449463 has 4 divisors (see below), whose sum is σ = 27407128. Its totient is φ = 23491800.

The previous prime is 25449449. The next prime is 25449467. The reversal of 25449463 is 36494452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25449463 - 2¹³ = 25441271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25449467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978813 + ... + 978838.

It is an arithmetic number, because the mean of its divisors is an integer number (6851782).

Almost surely, 2^25449463 is an apocalyptic number.

25449463 is a deficient number, since it is larger than the sum of its proper divisors (1957665).

25449463 is a wasteful number, since it uses less digits than its factorization.

25449463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957664.

The product of its digits is 103680, while the sum is 37.

The square root of 25449463 is about 5044.7460788428. The cubic root of 25449463 is about 294.1436931593.

The spelling of 25449463 in words is "twenty-five million, four hundred forty-nine thousand, four hundred sixty-three".