725149503 has 40 divisors (see below), whose sum is σ = 1180772208. Its totient is φ = 440816256.

The previous prime is 725149499. The next prime is 725149519. The reversal of 725149503 is 305941527.

725149503 is a `hidden beast` number, since 7 + 2 + 5 + 149 + 503 = 666.

It is not a de Polignac number, because 725149503 - 2² = 725149499 is a prime.

It is a super-2 number, since 2×725149503² = 1051683603402294018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725147503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83251 + ... + 91547.

Almost surely, 2^725149503 is an apocalyptic number.

725149503 is a deficient number, since it is larger than the sum of its proper divisors (455622705).

725149503 is a wasteful number, since it uses less digits than its factorization.

725149503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405 (or 8396 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 725149503 is about 26928.6000935808. The cubic root of 725149503 is about 898.4126352829.

The spelling of 725149503 in words is "seven hundred twenty-five million, one hundred forty-nine thousand, five hundred three".