2500397069 has 4 divisors (see below), whose sum is σ = 2501296380. Its totient is φ = 2499497760.

The previous prime is 2500397051. The next prime is 2500397083. The reversal of 2500397069 is 9607930052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 504541444 + 1995855625 = 22462^2 + 44675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500397069 is a prime.

It is a super-3 number, since 3×2500397069³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500397569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445472 + ... + 451049.

It is an arithmetic number, because the mean of its divisors is an integer number (625324095).

Almost surely, 2^2500397069 is an apocalyptic number.

It is an amenable number.

2500397069 is a deficient number, since it is larger than the sum of its proper divisors (899311).

2500397069 is an equidigital number, since it uses as much as digits as its factorization.

2500397069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899310.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 2500397069 is about 50003.9705323487. The cubic root of 2500397069 is about 1357.2806585662.

The spelling of 2500397069 in words is "two billion, five hundred million, three hundred ninety-seven thousand, sixty-nine".