651925645 has 24 divisors (see below), whose sum is σ = 914420448. Its totient is φ = 444880800.

The previous prime is 651925577. The next prime is 651925649. The reversal of 651925645 is 546529156.

It is not a de Polignac number, because 651925645 - 2⁷ = 651925517 is a prime.

It is a super-3 number, since 3×651925645³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651925649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45390 + ... + 58000.

It is an arithmetic number, because the mean of its divisors is an integer number (38100852).

Almost surely, 2^651925645 is an apocalyptic number.

It is an amenable number.

651925645 is a deficient number, since it is larger than the sum of its proper divisors (262494803).

651925645 is a wasteful number, since it uses less digits than its factorization.

651925645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841 (or 12834 counting only the distinct ones).

The product of its digits is 324000, while the sum is 43.

The square root of 651925645 is about 25532.8346448255. The cubic root of 651925645 is about 867.0936819935.

It can be divided in two parts, 6519 and 25645, that multiplied together give a triangular number (167179755 = T₁₈₂₈₅).

The spelling of 651925645 in words is "six hundred fifty-one million, nine hundred twenty-five thousand, six hundred forty-five".