25454160665 has 8 divisors (see below), whose sum is σ = 30547091400. Its totient is φ = 20361929472.

The previous prime is 25454160659. The next prime is 25454160671. The reversal of 25454160665 is 56606145452.

It is an interprime number because it is at equal distance from previous prime (25454160659) and next prime (25454160671).

It can be written as a sum of positive squares in 4 ways, for example, as 3897754624 + 21556406041 = 62432^2 + 146821^2 .

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 25454160665 - 2⁸ = 25454160409 is a prime.

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, 91190 + ... + 243359.

It is an arithmetic number, because the mean of its divisors is an integer number (3818386425).

Almost surely, 2^25454160665 is an apocalyptic number.

It is an amenable number.

25454160665 is a deficient number, since it is larger than the sum of its proper divisors (5092930735).

25454160665 is a wasteful number, since it uses less digits than its factorization.

25454160665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349771.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 25454160665 in words is "twenty-five billion, four hundred fifty-four million, one hundred sixty thousand, six hundred sixty-five".