2551525 has 6 divisors (see below), whose sum is σ = 3163922. Its totient is φ = 2041200.

The previous prime is 2551511. The next prime is 2551531. The reversal of 2551525 is 5251552.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 145924 + 2405601 = 382^2 + 1551^2 .

It is not a de Polignac number, because 2551525 - 2⁷ = 2551397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 102061 = 2551525 / (2 + 5 + 5 + 1 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2551525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51006 + ... + 51055.

2^2551525 is an apocalyptic number.

2551525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2551525 is a deficient number, since it is larger than the sum of its proper divisors (612397).

2551525 is a wasteful number, since it uses less digits than its factorization.

2551525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102071 (or 102066 counting only the distinct ones).

The product of its digits is 2500, while the sum is 25.

The square root of 2551525 is about 1597.3493669201. The cubic root of 2551525 is about 136.6469500276.

The spelling of 2551525 in words is "two million, five hundred fifty-one thousand, five hundred twenty-five".