25552025501 has 4 divisors (see below), whose sum is σ = 25552486812. Its totient is φ = 25551564192.

The previous prime is 25552025489. The next prime is 25552025537. The reversal of 25552025501 is 10552025552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23493225625 + 2058799876 = 153275^2 + 45374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25552025501 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 (25552025201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134096 + ... + 262841.

It is an arithmetic number, because the mean of its divisors is an integer number (6388121703).

Almost surely, 2^25552025501 is an apocalyptic number.

It is an amenable number.

25552025501 is a deficient number, since it is larger than the sum of its proper divisors (461311).

25552025501 is an equidigital number, since it uses as much as digits as its factorization.

25552025501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461310.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 25552025501 in words is "twenty-five billion, five hundred fifty-two million, twenty-five thousand, five hundred one".