2505147 has 16 divisors (see below), whose sum is σ = 3463680. Its totient is φ = 1609632.

The previous prime is 2505143. The next prime is 2505157. The reversal of 2505147 is 7415052.

It is not a de Polignac number, because 2505147 - 2² = 2505143 is a prime.

It is a super-2 number, since 2×2505147² = 12551522983218, which contains 22 as substring.

2505147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2505143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15288 + ... + 15450.

It is an arithmetic number, because the mean of its divisors is an integer number (216480).

2^2505147 is an apocalyptic number.

2505147 is a deficient number, since it is larger than the sum of its proper divisors (958533).

2505147 is a wasteful number, since it uses less digits than its factorization.

2505147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 2505147 is about 1582.7656175189. The cubic root of 2505147 is about 135.8139576999.

The spelling of 2505147 in words is "two million, five hundred five thousand, one hundred forty-seven".