651625045 has 16 divisors (see below), whose sum is σ = 871525440. Its totient is φ = 464811264.

The previous prime is 651625031. The next prime is 651625057. The reversal of 651625045 is 540526156.

It is a cyclic number.

It is not a de Polignac number, because 651625045 - 2⁷ = 651624917 is a prime.

It is a super-4 number, since 4×651625045⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 651625045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200127 + ... + 203356.

It is an arithmetic number, because the mean of its divisors is an integer number (54470340).

Almost surely, 2^651625045 is an apocalyptic number.

It is an amenable number.

651625045 is a deficient number, since it is larger than the sum of its proper divisors (219900395).

651625045 is a wasteful number, since it uses less digits than its factorization.

651625045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403524.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 651625045 is about 25526.9474281591. The cubic root of 651625045 is about 866.9603904981.

It can be divided in two parts, 65162 and 5045, that added together give a palindrome (70207).

The spelling of 651625045 in words is "six hundred fifty-one million, six hundred twenty-five thousand, forty-five".