2506257 has 24 divisors (see below), whose sum is σ = 4030208. Its totient is φ = 1490400.

The previous prime is 2506253. The next prime is 2506277. The reversal of 2506257 is 7526052.

It is not a de Polignac number, because 2506257 - 2² = 2506253 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2506257.

It is not an unprimeable number, because it can be changed into a prime (2506253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3282 + ... + 3972.

2^2506257 is an apocalyptic number.

It is an amenable number.

2506257 is a deficient number, since it is larger than the sum of its proper divisors (1523951).

2506257 is a wasteful number, since it uses less digits than its factorization.

2506257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 2506257 is about 1583.1162307298. The cubic root of 2506257 is about 135.8340139059.

The spelling of 2506257 in words is "two million, five hundred six thousand, two hundred fifty-seven".