40725519 has 4 divisors (see below), whose sum is σ = 54300696. Its totient is φ = 27150344.

The previous prime is 40725511. The next prime is 40725521. The reversal of 40725519 is 91552704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40725519 - 2³ = 40725511 is a prime.

It is a super-2 number, since 2×40725519² = 3317135795638722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40725519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40725511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6787584 + ... + 6787589.

It is an arithmetic number, because the mean of its divisors is an integer number (13575174).

Almost surely, 2^40725519 is an apocalyptic number.

40725519 is a deficient number, since it is larger than the sum of its proper divisors (13575177).

40725519 is a wasteful number, since it uses less digits than its factorization.

40725519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13575176.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 40725519 is about 6381.6548794180. The cubic root of 40725519 is about 344.0505125707.

It can be divided in two parts, 4072 and 5519, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 40725519 in words is "forty million, seven hundred twenty-five thousand, five hundred nineteen".