25899263245 has 8 divisors (see below), whose sum is σ = 31136566680. Its totient is φ = 20681110080.

The previous prime is 25899263239. The next prime is 25899263263. The reversal of 25899263245 is 54236299852.

It can be written as a sum of positive squares in 4 ways, for example, as 6615219556 + 19284043689 = 81334^2 + 138867^2 .

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

It is not a de Polignac number, because 25899263245 - 2³ = 25899263237 is a prime.

It is a super-3 number, since 3×25899263245³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4784590 + ... + 4789999.

It is an arithmetic number, because the mean of its divisors is an integer number (3892070835).

Almost surely, 2^25899263245 is an apocalyptic number.

It is an amenable number.

25899263245 is a deficient number, since it is larger than the sum of its proper divisors (5237303435).

25899263245 is an equidigital number, since it uses as much as digits as its factorization.

25899263245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575135.

The product of its digits is 9331200, while the sum is 55.

The spelling of 25899263245 in words is "twenty-five billion, eight hundred ninety-nine million, two hundred sixty-three thousand, two hundred forty-five".