1540725071 has 8 divisors (see below), whose sum is σ = 1561317120. Its totient is φ = 1520160408.

The previous prime is 1540725061. The next prime is 1540725077. The reversal of 1540725071 is 1705270451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1540725071 - 2³⁰ = 466983247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540725077) 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 7 ways as a sum of consecutive naturals, for example, 122540 + ... + 134526.

It is an arithmetic number, because the mean of its divisors is an integer number (195164640).

Almost surely, 2^1540725071 is an apocalyptic number.

1540725071 is a deficient number, since it is larger than the sum of its proper divisors (20592049).

1540725071 is a wasteful number, since it uses less digits than its factorization.

1540725071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 1540725071 is about 39252.0709135200. The cubic root of 1540725071 is about 1154.9815582720.

The spelling of 1540725071 in words is "one billion, five hundred forty million, seven hundred twenty-five thousand, seventy-one".