25612534487 has 8 divisors (see below), whose sum is σ = 25687812096. Its totient is φ = 25537343832.

The previous prime is 25612534481. The next prime is 25612534523. The reversal of 25612534487 is 78443521652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25612534487 - 2³² = 21317567191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25612534481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593558 + ... + 635244.

It is an arithmetic number, because the mean of its divisors is an integer number (3210976512).

Almost surely, 2^25612534487 is an apocalyptic number.

25612534487 is a deficient number, since it is larger than the sum of its proper divisors (75277609).

25612534487 is a wasteful number, since it uses less digits than its factorization.

25612534487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43477.

The product of its digits is 1612800, while the sum is 47.

The spelling of 25612534487 in words is "twenty-five billion, six hundred twelve million, five hundred thirty-four thousand, four hundred eighty-seven".