1651959825 has 24 divisors (see below), whose sum is σ = 2747615808. Its totient is φ = 875762880.

The previous prime is 1651959779. The next prime is 1651959913. The reversal of 1651959825 is 5289591561.

It is not a de Polignac number, because 1651959825 - 2²⁴ = 1635182609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53422 + ... + 78471.

It is an arithmetic number, because the mean of its divisors is an integer number (114483992).

Almost surely, 2^1651959825 is an apocalyptic number.

1651959825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1651959825 is a deficient number, since it is larger than the sum of its proper divisors (1095655983).

1651959825 is a wasteful number, since it uses less digits than its factorization.

1651959825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132073 (or 132068 counting only the distinct ones).

The product of its digits is 972000, while the sum is 51.

The square root of 1651959825 is about 40644.3086421703. The cubic root of 1651959825 is about 1182.1334154735.

The spelling of 1651959825 in words is "one billion, six hundred fifty-one million, nine hundred fifty-nine thousand, eight hundred twenty-five".