2638525 has 6 divisors (see below), whose sum is σ = 3271802. Its totient is φ = 2110800.

The previous prime is 2638501. The next prime is 2638529. The reversal of 2638525 is 5258362.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 582169 + 2056356 = 763^2 + 1434^2 .

It is not a de Polignac number, because 2638525 - 2¹³ = 2630333 is a prime.

It is a d-powerful number, because it can be written as 2² + 6⁷ + 3¹¹ + 8⁷ + 5⁵ + 2¹⁶ + 5⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52746 + ... + 52795.

2^2638525 is an apocalyptic number.

2638525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2638525 is a deficient number, since it is larger than the sum of its proper divisors (633277).

2638525 is a wasteful number, since it uses less digits than its factorization.

2638525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105551 (or 105546 counting only the distinct ones).

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

The square root of 2638525 is about 1624.3537176366. The cubic root of 2638525 is about 138.1827202236.

The spelling of 2638525 in words is "two million, six hundred thirty-eight thousand, five hundred twenty-five".