625640351 has 8 divisors (see below), whose sum is σ = 715674624. Its totient is φ = 535770360.

The previous prime is 625640333. The next prime is 625640423. The reversal of 625640351 is 153046526.

625640351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 625640351 - 2¹⁴ = 625623967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625640311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32795 + ... + 48236.

It is an arithmetic number, because the mean of its divisors is an integer number (89459328).

Almost surely, 2^625640351 is an apocalyptic number.

625640351 is a deficient number, since it is larger than the sum of its proper divisors (90034273).

625640351 is a wasteful number, since it uses less digits than its factorization.

625640351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82141.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 625640351 is about 25012.8037412842. The cubic root of 625640351 is about 855.2798696211.

Adding to 625640351 its reverse (153046526), we get a palindrome (778686877).

The spelling of 625640351 in words is "six hundred twenty-five million, six hundred forty thousand, three hundred fifty-one".