2625538 has 4 divisors (see below), whose sum is σ = 3938310. Its totient is φ = 1312768.

The previous prime is 2625533. The next prime is 2625541. The reversal of 2625538 is 8355262.

It is a happy number.

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., 2362369 + 263169 = 1537^2 + 513^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656383 + ... + 656386.

2^2625538 is an apocalyptic number.

2625538 is a deficient number, since it is larger than the sum of its proper divisors (1312772).

2625538 is a wasteful number, since it uses less digits than its factorization.

2625538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312771.

The product of its digits is 14400, while the sum is 31.

The square root of 2625538 is about 1620.3511965003. The cubic root of 2625538 is about 137.9556323099.

It can be divided in two parts, 262 and 5538, that multiplied together give a triangular number (1450956 = T₁₇₀₃).

The spelling of 2625538 in words is "two million, six hundred twenty-five thousand, five hundred thirty-eight".