625311523 has 4 divisors (see below), whose sum is σ = 626138320. Its totient is φ = 624484728.

The previous prime is 625311487. The next prime is 625311553. The reversal of 625311523 is 325113526.

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 625311523 - 2²⁵ = 591757091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625311491 and 625311500.

It is not an unprimeable number, because it can be changed into a prime (625311553) 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, 412263 + ... + 413776.

It is an arithmetic number, because the mean of its divisors is an integer number (156534580).

Almost surely, 2^625311523 is an apocalyptic number.

625311523 is a deficient number, since it is larger than the sum of its proper divisors (826797).

625311523 is an equidigital number, since it uses as much as digits as its factorization.

625311523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826796.

The product of its digits is 5400, while the sum is 28.

The square root of 625311523 is about 25006.2296838208. The cubic root of 625311523 is about 855.1300022333.

The spelling of 625311523 in words is "six hundred twenty-five million, three hundred eleven thousand, five hundred twenty-three".