620525 has 6 divisors (see below), whose sum is σ = 769482. Its totient is φ = 496400.

The previous prime is 620519. The next prime is 620531. The reversal of 620525 is 525026.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (620519) and next prime (620531).

It can be written as a sum of positive squares in 3 ways, for example, as 1156 + 619369 = 34^2 + 787^2 .

It is not a de Polignac number, because 620525 - 2⁶ = 620461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620497 and 620506.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620525.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12386 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (128247).

2⁶²⁰⁵²⁵ is an apocalyptic number.

It is an amenable number.

620525 is a deficient number, since it is larger than the sum of its proper divisors (148957).

620525 is a wasteful number, since it uses less digits than its factorization.

620525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24831 (or 24826 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 620525 is about 787.7340921910. The cubic root of 620525 is about 85.2942512413.

The spelling of 620525 in words is "six hundred twenty thousand, five hundred twenty-five".