1540468725 has 24 divisors (see below), whose sum is σ = 2566978560. Its totient is φ = 815109120.

The previous prime is 1540468697. The next prime is 1540468733. The reversal of 1540468725 is 5278640451.

It is a happy number.

It is not a de Polignac number, because 1540468725 - 2¹⁵ = 1540435957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71340 + ... + 90389.

It is an arithmetic number, because the mean of its divisors is an integer number (106957440).

Almost surely, 2^1540468725 is an apocalyptic number.

1540468725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540468725 is a deficient number, since it is larger than the sum of its proper divisors (1026509835).

1540468725 is a wasteful number, since it uses less digits than its factorization.

1540468725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161869 (or 161864 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 1540468725 is about 39248.8053958334. The cubic root of 1540468725 is about 1154.9174994013.

The spelling of 1540468725 in words is "one billion, five hundred forty million, four hundred sixty-eight thousand, seven hundred twenty-five".