2500065901 has 8 divisors (see below), whose sum is σ = 2609165880. Its totient is φ = 2392492032.

The previous prime is 2500065889. The next prime is 2500065949. The reversal of 2500065901 is 1095600052.

It can be written as a sum of positive squares in 4 ways, for example, as 452412900 + 2047653001 = 21270^2 + 45251^2 .

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 2500065901 - 2²¹ = 2497968749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500065901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500045901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378180 + ... + 384733.

It is an arithmetic number, because the mean of its divisors is an integer number (326145735).

Almost surely, 2^2500065901 is an apocalyptic number.

It is an amenable number.

2500065901 is a deficient number, since it is larger than the sum of its proper divisors (109099979).

2500065901 is a wasteful number, since it uses less digits than its factorization.

2500065901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763055.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 2500065901 is about 50000.6590056571. The cubic root of 2500065901 is about 1357.2207337150.

Adding to 2500065901 its reverse (1095600052), we get a palindrome (3595665953).

It can be divided in two parts, 2500065 and 901, that added together give a triangular number (2500966 = T₂₂₃₆).

The spelling of 2500065901 in words is "two billion, five hundred million, sixty-five thousand, nine hundred one".