625160521 has 2 divisors, whose sum is σ = 625160522. Its totient is φ = 625160520.

The previous prime is 625160509. The next prime is 625160537. The reversal of 625160521 is 125061526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399560121 + 225600400 = 19989^2 + 15020^2 .

It is a cyclic number.

It is not a de Polignac number, because 625160521 - 2¹³ = 625152329 is a prime.

It is equal to p_32568211 and since 625160521 and 32568211 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625160521.

It is not a weakly prime, because it can be changed into another prime (625160551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312580260 + 312580261.

It is an arithmetic number, because the mean of its divisors is an integer number (312580261).

Almost surely, 2^625160521 is an apocalyptic number.

It is an amenable number.

625160521 is a deficient number, since it is larger than the sum of its proper divisors (1).

625160521 is an equidigital number, since it uses as much as digits as its factorization.

625160521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 625160521 is about 25003.2102138905. The cubic root of 625160521 is about 855.0611636192.

It can be divided in two parts, 625160 and 521, that added together give a square (625681 = 791²).

The spelling of 625160521 in words is "six hundred twenty-five million, one hundred sixty thousand, five hundred twenty-one".