651952625 has 16 divisors (see below), whose sum is σ = 841698000. Its totient is φ = 503574400.

The previous prime is 651952619. The next prime is 651952657. The reversal of 651952625 is 526259156.

It can be written as a sum of positive squares in 8 ways, for example, as 322130704 + 329821921 = 17948^2 + 18161^2 .

It is not a de Polignac number, because 651952625 - 2¹² = 651948529 is a prime.

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, 86300 + ... + 93549.

It is an arithmetic number, because the mean of its divisors is an integer number (52606125).

Almost surely, 2^651952625 is an apocalyptic number.

It is an amenable number.

651952625 is a deficient number, since it is larger than the sum of its proper divisors (189745375).

651952625 is a wasteful number, since it uses less digits than its factorization.

651952625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179893 (or 179883 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 651952625 is about 25533.3629786599. The cubic root of 651952625 is about 867.1056434112.

The spelling of 651952625 in words is "six hundred fifty-one million, nine hundred fifty-two thousand, six hundred twenty-five".