25087542773 has 4 divisors (see below), whose sum is σ = 25498814028. Its totient is φ = 24676271520.

The previous prime is 25087542757. The next prime is 25087542803. The reversal of 25087542773 is 37724578052.

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 1757118724 + 23330424049 = 41918^2 + 152743^2 .

It is a cyclic number.

It is not a de Polignac number, because 25087542773 - 2⁴ = 25087542757 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 (25087542713) 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, 205635536 + ... + 205635657.

It is an arithmetic number, because the mean of its divisors is an integer number (6374703507).

Almost surely, 2^25087542773 is an apocalyptic number.

It is an amenable number.

25087542773 is a deficient number, since it is larger than the sum of its proper divisors (411271255).

25087542773 is an equidigital number, since it uses as much as digits as its factorization.

25087542773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411271254.

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 25087542773 in words is "twenty-five billion, eighty-seven million, five hundred forty-two thousand, seven hundred seventy-three".