25642303361 has 8 divisors (see below), whose sum is σ = 25862169960. Its totient is φ = 25423152768.

The previous prime is 25642303339. The next prime is 25642303363. The reversal of 25642303361 is 16330324652.

It can be written as a sum of positive squares in 4 ways, for example, as 12838023025 + 12804280336 = 113305^2 + 113156^2 .

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 25642303361 - 2¹⁴ = 25642286977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25642303363) 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, 106946 + ... + 250443.

It is an arithmetic number, because the mean of its divisors is an integer number (3232771245).

Almost surely, 2^25642303361 is an apocalyptic number.

It is an amenable number.

25642303361 is a deficient number, since it is larger than the sum of its proper divisors (219866599).

25642303361 is a wasteful number, since it uses less digits than its factorization.

25642303361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358003.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 25642303361 in words is "twenty-five billion, six hundred forty-two million, three hundred three thousand, three hundred sixty-one".