25456534 has 4 divisors (see below), whose sum is σ = 38184804. Its totient is φ = 12728266.

The previous prime is 25456499. The next prime is 25456547. The reversal of 25456534 is 43565452.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25456534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364132 + ... + 6364135.

It is an arithmetic number, because the mean of its divisors is an integer number (9546201).

Almost surely, 2^25456534 is an apocalyptic number.

25456534 is a deficient number, since it is larger than the sum of its proper divisors (12728270).

25456534 is a wasteful number, since it uses less digits than its factorization.

25456534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12728269.

The product of its digits is 72000, while the sum is 34.

The square root of 25456534 is about 5045.4468583070. The cubic root of 25456534 is about 294.1709327315.

The spelling of 25456534 in words is "twenty-five million, four hundred fifty-six thousand, five hundred thirty-four".