25252604534 has 4 divisors (see below), whose sum is σ = 37878906804. Its totient is φ = 12626302266.

The previous prime is 25252604527. The next prime is 25252604563. The reversal of 25252604534 is 43540625252.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313151132 + ... + 6313151135.

It is an arithmetic number, because the mean of its divisors is an integer number (9469726701).

Almost surely, 2^25252604534 is an apocalyptic number.

25252604534 is a deficient number, since it is larger than the sum of its proper divisors (12626302270).

25252604534 is a wasteful number, since it uses less digits than its factorization.

25252604534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12626302269.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 25252604534 in words is "twenty-five billion, two hundred fifty-two million, six hundred four thousand, five hundred thirty-four".