15755225 has 24 divisors (see below), whose sum is σ = 20233080. Its totient is φ = 12165120.

The previous prime is 15755221. The next prime is 15755231. The reversal of 15755225 is 52255751.

It can be written as a sum of positive squares in 12 ways, for example, as 6416089 + 9339136 = 2533^2 + 3056^2 .

It is not a de Polignac number, because 15755225 - 2² = 15755221 is a prime.

It is a super-2 number, since 2×15755225² = 496454229601250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15755191 and 15755200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15755221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162377 + ... + 162473.

It is an arithmetic number, because the mean of its divisors is an integer number (843045).

Almost surely, 2^15755225 is an apocalyptic number.

It is an amenable number.

15755225 is a deficient number, since it is larger than the sum of its proper divisors (4477855).

15755225 is an equidigital number, since it uses as much as digits as its factorization.

15755225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its digits is 17500, while the sum is 32.

The square root of 15755225 is about 3969.2852001336. The cubic root of 15755225 is about 250.6926127118.

The spelling of 15755225 in words is "fifteen million, seven hundred fifty-five thousand, two hundred twenty-five".