1537225 has 12 divisors (see below), whose sum is σ = 2018844. Its totient is φ = 1157120.

The previous prime is 1537223. The next prime is 1537241. The reversal of 1537225 is 5227351.

It can be written as a sum of positive squares in 6 ways, for example, as 182329 + 1354896 = 427^2 + 1164^2 .

It is not a de Polignac number, because 1537225 - 2¹ = 1537223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1537225.

It is not an unprimeable number, because it can be changed into a prime (1537223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1384 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (168237).

2^1537225 is an apocalyptic number.

It is an amenable number.

1537225 is a deficient number, since it is larger than the sum of its proper divisors (481619).

1537225 is a wasteful number, since it uses less digits than its factorization.

1537225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644 (or 3639 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 1537225 is about 1239.8487811020. The cubic root of 1537225 is about 115.4106303165.

The spelling of 1537225 in words is "one million, five hundred thirty-seven thousand, two hundred twenty-five".