25481478 has 16 divisors (see below), whose sum is σ = 55596096. Its totient is φ = 7721640.

The previous prime is 25481429. The next prime is 25481497. The reversal of 25481478 is 87418452.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192976 + ... + 193107.

It is an arithmetic number, because the mean of its divisors is an integer number (3474756).

Almost surely, 2^25481478 is an apocalyptic number.

25481478 is an abundant number, since it is smaller than the sum of its proper divisors (30114618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25481478 is a wasteful number, since it uses less digits than its factorization.

25481478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386099.

The product of its digits is 71680, while the sum is 39.

The square root of 25481478 is about 5047.9181847570. The cubic root of 25481478 is about 294.2669840944.

The spelling of 25481478 in words is "twenty-five million, four hundred eighty-one thousand, four hundred seventy-eight".