2625842 has 4 divisors (see below), whose sum is σ = 3938766. Its totient is φ = 1312920.

The previous prime is 2625839. The next prime is 2625851. The reversal of 2625842 is 2485262.

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

It can be written as a sum of positive squares in only one way, i.e., 1901641 + 724201 = 1379^2 + 851^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656459 + ... + 656462.

2^2625842 is an apocalyptic number.

2625842 is a deficient number, since it is larger than the sum of its proper divisors (1312924).

2625842 is a wasteful number, since it uses less digits than its factorization.

2625842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312923.

The product of its digits is 7680, while the sum is 29.

The square root of 2625842 is about 1620.4450006094. The cubic root of 2625842 is about 137.9609565386.

Subtracting from 2625842 its product of digits (7680), we obtain a palindrome (2618162).

The spelling of 2625842 in words is "two million, six hundred twenty-five thousand, eight hundred forty-two".