625455117253 has 4 divisors (see below), whose sum is σ = 625470982668. Its totient is φ = 625439251840.

The previous prime is 625455117233. The next prime is 625455117263. The reversal of 625455117253 is 352711554526.

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

It can be written as a sum of positive squares in 2 ways, for example, as 285890187969 + 339564929284 = 534687^2 + 582722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625455117253 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 (625455117233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7873426 + ... + 7952467.

It is an arithmetic number, because the mean of its divisors is an integer number (156367745667).

Almost surely, 2^625455117253 is an apocalyptic number.

It is an amenable number.

625455117253 is a deficient number, since it is larger than the sum of its proper divisors (15865415).

625455117253 is a wasteful number, since it uses less digits than its factorization.

625455117253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15865414.

The product of its digits is 1260000, while the sum is 46.

The spelling of 625455117253 in words is "six hundred twenty-five billion, four hundred fifty-five million, one hundred seventeen thousand, two hundred fifty-three".