1509669225 has 96 divisors (see below), whose sum is σ = 2975702400. Its totient is φ = 748051200.

The previous prime is 1509669209. The next prime is 1509669247. The reversal of 1509669225 is 5229669051.

It is a happy number.

It is not a de Polignac number, because 1509669225 - 2⁴ = 1509669209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 678615 + ... + 680835.

It is an arithmetic number, because the mean of its divisors is an integer number (30996900).

Almost surely, 2^1509669225 is an apocalyptic number.

1509669225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1509669225 is a deficient number, since it is larger than the sum of its proper divisors (1466033175).

1509669225 is a wasteful number, since it uses less digits than its factorization.

1509669225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312 (or 2301 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 1509669225 is about 38854.4620989662. The cubic root of 1509669225 is about 1147.1686428444.

The spelling of 1509669225 in words is "one billion, five hundred nine million, six hundred sixty-nine thousand, two hundred twenty-five".