25555280507 has 8 divisors (see below), whose sum is σ = 26206829616. Its totient is φ = 24906333312.

The previous prime is 25555280489. The next prime is 25555280533. The reversal of 25555280507 is 70508255552.

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 25555280507 - 2¹⁴ = 25555264123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555286507) 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, 630578 + ... + 669879.

It is an arithmetic number, because the mean of its divisors is an integer number (3275853702).

Almost surely, 2^25555280507 is an apocalyptic number.

25555280507 is a deficient number, since it is larger than the sum of its proper divisors (651549109).

25555280507 is a wasteful number, since it uses less digits than its factorization.

25555280507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300957.

The product of its (nonzero) digits is 700000, while the sum is 44.

The spelling of 25555280507 in words is "twenty-five billion, five hundred fifty-five million, two hundred eighty thousand, five hundred seven".