1290528925 has 72 divisors (see below), whose sum is σ = 1986728000. Its totient is φ = 828938880.

The previous prime is 1290528917. The next prime is 1290528929. The reversal of 1290528925 is 5298250921.

It is not a de Polignac number, because 1290528925 - 2³ = 1290528917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290528929) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14500281 + ... + 14500369.

Almost surely, 2^1290528925 is an apocalyptic number.

It is an amenable number.

1290528925 is a deficient number, since it is larger than the sum of its proper divisors (696199075).

1290528925 is an frugal number, since it uses more digits than its factorization.

1290528925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1290528925 is about 35923.9324823995. The cubic root of 1290528925 is about 1088.7359937440.

The spelling of 1290528925 in words is "one billion, two hundred ninety million, five hundred twenty-eight thousand, nine hundred twenty-five".