15255880 has 32 divisors (see below), whose sum is σ = 34437240. Its totient is φ = 6082560.

The previous prime is 15255859. The next prime is 15255881. The reversal of 15255880 is 8855251.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15225604 + 30276 = 3902^2 + 174^2 .

It is not an unprimeable number, because it can be changed into a prime (15255881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22750 + ... + 23410.

Almost surely, 2^15255880 is an apocalyptic number.

15255880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15255880 is an abundant number, since it is smaller than the sum of its proper divisors (19181360).

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

15255880 is a wasteful number, since it uses less digits than its factorization.

15255880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 15255880 is about 3905.8776222509. The cubic root of 15255880 is about 248.0156511108.

The spelling of 15255880 in words is "fifteen million, two hundred fifty-five thousand, eight hundred eighty".