1651416625 has 16 divisors (see below), whose sum is σ = 2069849808. Its totient is φ = 1315440000.

The previous prime is 1651416623. The next prime is 1651416631. The reversal of 1651416625 is 5266141561.

It can be written as a sum of positive squares in 8 ways, for example, as 672727969 + 978688656 = 25937^2 + 31284^2 .

It is not a de Polignac number, because 1651416625 - 2¹ = 1651416623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1651416623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775 + ... + 57475.

It is an arithmetic number, because the mean of its divisors is an integer number (129365613).

Almost surely, 2^1651416625 is an apocalyptic number.

It is an amenable number.

1651416625 is a deficient number, since it is larger than the sum of its proper divisors (418433183).

1651416625 is an equidigital number, since it uses as much as digits as its factorization.

1651416625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56949 (or 56939 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 1651416625 is about 40637.6257303499. The cubic root of 1651416625 is about 1182.0038309527.

The spelling of 1651416625 in words is "one billion, six hundred fifty-one million, four hundred sixteen thousand, six hundred twenty-five".