620525252 has 6 divisors (see below), whose sum is σ = 1085919198. Its totient is φ = 310262624.

The previous prime is 620525249. The next prime is 620525263. The reversal of 620525252 is 252525026.

It can be written as a sum of positive squares in only one way, i.e., 363436096 + 257089156 = 19064^2 + 16034^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77565653 + ... + 77565660.

It is an arithmetic number, because the mean of its divisors is an integer number (180986533).

Almost surely, 2^620525252 is an apocalyptic number.

It is an amenable number.

620525252 is a deficient number, since it is larger than the sum of its proper divisors (465393946).

620525252 is a wasteful number, since it uses less digits than its factorization.

620525252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155131317 (or 155131315 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 620525252 is about 24910.3442770268. The cubic root of 620525252 is about 852.9426278753.

The spelling of 620525252 in words is "six hundred twenty million, five hundred twenty-five thousand, two hundred fifty-two".