25486947 has 16 divisors (see below), whose sum is σ = 37915680. Its totient is φ = 16920576.

The previous prime is 25486939. The next prime is 25486949. The reversal of 25486947 is 74968452.

It is a happy number.

25486947 is a `hidden beast` number, since 2 + 548 + 69 + 47 = 666.

It is not a de Polignac number, because 25486947 - 2³ = 25486939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25486949) 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, 5103 + ... + 8775.

It is an arithmetic number, because the mean of its divisors is an integer number (2369730).

Almost surely, 2^25486947 is an apocalyptic number.

25486947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25486947 is a deficient number, since it is larger than the sum of its proper divisors (12428733).

25486947 is a wasteful number, since it uses less digits than its factorization.

25486947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3933 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25486947 is about 5048.4598641566. The cubic root of 25486947 is about 294.2880350844.

The spelling of 25486947 in words is "twenty-five million, four hundred eighty-six thousand, nine hundred forty-seven".