1451689625 has 8 divisors (see below), whose sum is σ = 1811708808. Its totient is φ = 1161351600.

The previous prime is 1451689609. The next prime is 1451689633. The reversal of 1451689625 is 5269861541.

It can be written as a sum of positive squares in 4 ways, for example, as 297321049 + 1154368576 = 17243^2 + 33976^2 .

It is not a de Polignac number, because 1451689625 - 2⁴ = 1451689609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1451689625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5806634 + ... + 5806883.

It is an arithmetic number, because the mean of its divisors is an integer number (226463601).

Almost surely, 2^1451689625 is an apocalyptic number.

It is an amenable number.

1451689625 is a deficient number, since it is larger than the sum of its proper divisors (360019183).

1451689625 is an equidigital number, since it uses as much as digits as its factorization.

1451689625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11613532 (or 11613522 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 1451689625 is about 38101.0449331774. The cubic root of 1451689625 is about 1132.2906584325.

The spelling of 1451689625 in words is "one billion, four hundred fifty-one million, six hundred eighty-nine thousand, six hundred twenty-five".