2506255397 has 4 divisors (see below), whose sum is σ = 2534415660. Its totient is φ = 2478095136.

The previous prime is 2506255327. The next prime is 2506255403. The reversal of 2506255397 is 7935526052.

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 206956996 + 2299298401 = 14386^2 + 47951^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506255397 - 2¹⁴ = 2506239013 is a prime.

It is a super-2 number, since 2×2506255397² = 12562632229983255218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506255327) 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, 14079998 + ... + 14080175.

It is an arithmetic number, because the mean of its divisors is an integer number (633603915).

Almost surely, 2^2506255397 is an apocalyptic number.

It is an amenable number.

2506255397 is a deficient number, since it is larger than the sum of its proper divisors (28160263).

2506255397 is an equidigital number, since it uses as much as digits as its factorization.

2506255397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28160262.

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 2506255397 is about 50062.5148888867. The cubic root of 2506255397 is about 1358.3398494608.

The spelling of 2506255397 in words is "two billion, five hundred six million, two hundred fifty-five thousand, three hundred ninety-seven".