13625550 has 48 divisors (see below), whose sum is σ = 37549680. Its totient is φ = 3633120.

The previous prime is 13625543. The next prime is 13625569. The reversal of 13625550 is 5552631.

13625550 = 21² + 22² + ... + 344².

It is a super-2 number, since 2×13625550² = 371311225605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3697 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (782285).

Almost surely, 2^13625550 is an apocalyptic number.

13625550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13625550 is an abundant number, since it is smaller than the sum of its proper divisors (23924130).

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

13625550 is a wasteful number, since it uses less digits than its factorization.

13625550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10114 (or 10103 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 13625550 is about 3691.2802657073. The cubic root of 13625550 is about 238.8460227955.

The spelling of 13625550 in words is "thirteen million, six hundred twenty-five thousand, five hundred fifty".