13003725 has 96 divisors (see below), whose sum is σ = 27426816. Its totient is φ = 5299200.

The previous prime is 13003703. The next prime is 13003741. The reversal of 13003725 is 52730031.

13003725 = T₁₅₅ + T₁₅₆ + ... + T₄₃₃.

It is a happy number.

It is not a de Polignac number, because 13003725 - 2⁷ = 13003597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 276652 + ... + 276698.

It is an arithmetic number, because the mean of its divisors is an integer number (285696).

Almost surely, 2^13003725 is an apocalyptic number.

13003725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13003725 is an abundant number, since it is smaller than the sum of its proper divisors (14423091).

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

13003725 is a wasteful number, since it uses less digits than its factorization.

13003725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 13003725 is about 3606.0678030231. The cubic root of 13003725 is about 235.1559248882.

Adding to 13003725 its reverse (52730031), we get a palindrome (65733756).

The spelling of 13003725 in words is "thirteen million, three thousand, seven hundred twenty-five".