503040125561 has 8 divisors (see below), whose sum is σ = 532304555904. Its totient is φ = 474391788640.

The previous prime is 503040125537. The next prime is 503040125569. The reversal of 503040125561 is 165521040305.

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 503040125561 - 2³⁸ = 228162218617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503040125569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154021676 + ... + 154024941.

It is an arithmetic number, because the mean of its divisors is an integer number (66538069488).

Almost surely, 2^503040125561 is an apocalyptic number.

It is an amenable number.

503040125561 is a deficient number, since it is larger than the sum of its proper divisors (29264430343).

503040125561 is a wasteful number, since it uses less digits than its factorization.

503040125561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308046711.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 503040125561 its reverse (165521040305), we get a palindrome (668561165866).

The spelling of 503040125561 in words is "five hundred three billion, forty million, one hundred twenty-five thousand, five hundred sixty-one".