13625690 has 32 divisors (see below), whose sum is σ = 26577936. Its totient is φ = 4999680.

The previous prime is 13625663. The next prime is 13625693. The reversal of 13625690 is 9652631.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4739329 + 8886361 = 2177^2 + 2981^2 .

It is a super-2 number, since 2×13625690² = 371318855952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13625693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36344 + ... + 36716.

Almost surely, 2^13625690 is an apocalyptic number.

13625690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13625690 is a deficient number, since it is larger than the sum of its proper divisors (12952246).

13625690 is a wasteful number, since it uses less digits than its factorization.

13625690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 13625690 is about 3691.2992292687. The cubic root of 13625690 is about 238.8468408256.

The spelling of 13625690 in words is "thirteen million, six hundred twenty-five thousand, six hundred ninety".