25001390012765 has 8 divisors (see below), whose sum is σ = 30001862528088. Its totient is φ = 20000982335040.

The previous prime is 25001390012761. The next prime is 25001390012791. The reversal of 25001390012765 is 56721009310052.

It can be written as a sum of positive squares in 4 ways, for example, as 8299365863044 + 16702024149721 = 2880862^2 + 4086811^2 .

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

It is not a de Polignac number, because 25001390012765 - 2² = 25001390012761 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 (25001390012761) 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, 15357002 + ... + 16906811.

It is an arithmetic number, because the mean of its divisors is an integer number (3750232816011).

Almost surely, 2^{25001390012765} is an apocalyptic number.

It is an amenable number.

25001390012765 is a deficient number, since it is larger than the sum of its proper divisors (5000472515323).

25001390012765 is a wasteful number, since it uses less digits than its factorization.

25001390012765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32418799.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 25001390012765 in words is "twenty-five trillion, one billion, three hundred ninety million, twelve thousand, seven hundred sixty-five".