1525526225 has 6 divisors (see below), whose sum is σ = 1891652550. Its totient is φ = 1220420960.

The previous prime is 1525526203. The next prime is 1525526227. The reversal of 1525526225 is 5226255251.

It can be written as a sum of positive squares in 3 ways, for example, as 19775809 + 1505750416 = 4447^2 + 38804^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1525526225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1525526227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30510500 + ... + 30510549.

It is an arithmetic number, because the mean of its divisors is an integer number (315275425).

Almost surely, 2^1525526225 is an apocalyptic number.

It is an amenable number.

1525526225 is a deficient number, since it is larger than the sum of its proper divisors (366126325).

1525526225 is an equidigital number, since it uses as much as digits as its factorization.

1525526225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61021059 (or 61021054 counting only the distinct ones).

The product of its digits is 60000, while the sum is 35.

The square root of 1525526225 is about 39057.9854191176. The cubic root of 1525526225 is about 1151.1711383728.

The spelling of 1525526225 in words is "one billion, five hundred twenty-five million, five hundred twenty-six thousand, two hundred twenty-five".