2506890397 has 32 divisors (see below), whose sum is σ = 2940478848. Its totient is φ = 2112000000.

The previous prime is 2506890391. The next prime is 2506890443. The reversal of 2506890397 is 7930986052.

2506890397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2506890397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2506890397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506890391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6251397 + ... + 6251797.

It is an arithmetic number, because the mean of its divisors is an integer number (91889964).

Almost surely, 2^2506890397 is an apocalyptic number.

It is an amenable number.

2506890397 is a deficient number, since it is larger than the sum of its proper divisors (433588451).

2506890397 is a wasteful number, since it uses less digits than its factorization.

2506890397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 2506890397 is about 50068.8565577446. The cubic root of 2506890397 is about 1358.4545588355.

The spelling of 2506890397 in words is "two billion, five hundred six million, eight hundred ninety thousand, three hundred ninety-seven".