1525225566 has 32 divisors (see below), whose sum is σ = 3129464448. Its totient is φ = 495300960.

The previous prime is 1525225561. The next prime is 1525225591. The reversal of 1525225566 is 6655225251.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525225561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94981 + ... + 109871.

It is an arithmetic number, because the mean of its divisors is an integer number (97795764).

Almost surely, 2^1525225566 is an apocalyptic number.

1525225566 is an abundant number, since it is smaller than the sum of its proper divisors (1604238882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525225566 is a wasteful number, since it uses less digits than its factorization.

1525225566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15336.

The product of its digits is 180000, while the sum is 39.

The square root of 1525225566 is about 39054.1363494317. The cubic root of 1525225566 is about 1151.0955070490.

The spelling of 1525225566 in words is "one billion, five hundred twenty-five million, two hundred twenty-five thousand, five hundred sixty-six".