15225480 has 48 divisors (see below), whose sum is σ = 49483980. Its totient is φ = 4060032.

The previous prime is 15225449. The next prime is 15225491. The reversal of 15225480 is 8452251.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14607684 + 617796 = 3822^2 + 786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20787 + ... + 21506.

Almost surely, 2^15225480 is an apocalyptic number.

15225480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15225480 is an abundant number, since it is smaller than the sum of its proper divisors (34258500).

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

15225480 is a wasteful number, since it uses less digits than its factorization.

15225480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42310 (or 42303 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 15225480 is about 3901.9841106801. The cubic root of 15225480 is about 247.8508034283.

The spelling of 15225480 in words is "fifteen million, two hundred twenty-five thousand, four hundred eighty".