625251049 has 12 divisors (see below), whose sum is σ = 664807500. Its totient is φ = 587337408.

The previous prime is 625251047. The next prime is 625251061. The reversal of 625251049 is 940152526.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13579225 + 611671824 = 3685^2 + 24732^2 .

It is not a de Polignac number, because 625251049 - 2¹ = 625251047 is a prime.

It is a super-3 number, since 3×625251049³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625251047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31827 + ... + 47575.

It is an arithmetic number, because the mean of its divisors is an integer number (55400625).

Almost surely, 2^625251049 is an apocalyptic number.

It is an amenable number.

625251049 is a deficient number, since it is larger than the sum of its proper divisors (39556451).

625251049 is a wasteful number, since it uses less digits than its factorization.

625251049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15852 (or 15815 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 625251049 is about 25005.0204758964. The cubic root of 625251049 is about 855.1024347479.

The spelling of 625251049 in words is "six hundred twenty-five million, two hundred fifty-one thousand, forty-nine".