25189534 has 4 divisors (see below), whose sum is σ = 37784304. Its totient is φ = 12594766.

The previous prime is 25189517. The next prime is 25189537. The reversal of 25189534 is 43598152.

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

It is a junction number, because it is equal to n+sod(n) for n = 25189493 and 25189502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25189537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6297382 + ... + 6297385.

It is an arithmetic number, because the mean of its divisors is an integer number (9446076).

Almost surely, 2^25189534 is an apocalyptic number.

25189534 is a deficient number, since it is larger than the sum of its proper divisors (12594770).

25189534 is a wasteful number, since it uses less digits than its factorization.

25189534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12594769.

The product of its digits is 43200, while the sum is 37.

The square root of 25189534 is about 5018.9176123941. The cubic root of 25189534 is about 293.1388486417.

The spelling of 25189534 in words is "twenty-five million, one hundred eighty-nine thousand, five hundred thirty-four".