25265076509 has 8 divisors (see below), whose sum is σ = 25380558720. Its totient is φ = 25149852000.

The previous prime is 25265076503. The next prime is 25265076523. The reversal of 25265076509 is 90567056252.

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 25265076509 - 2⁸ = 25265076253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265076503) 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, 133484 + ... + 261434.

It is an arithmetic number, because the mean of its divisors is an integer number (3172569840).

Almost surely, 2^25265076509 is an apocalyptic number.

It is an amenable number.

25265076509 is a deficient number, since it is larger than the sum of its proper divisors (115482211).

25265076509 is a wasteful number, since it uses less digits than its factorization.

25265076509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128851.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 25265076509 in words is "twenty-five billion, two hundred sixty-five million, seventy-six thousand, five hundred nine".