1625452461 has 16 divisors (see below), whose sum is σ = 2408716800. Its totient is φ = 1083347424.

The previous prime is 1625452459. The next prime is 1625452469. The reversal of 1625452461 is 1642545261.

1625452461 is a `hidden beast` number, since 1 + 625 + 4 + 5 + 24 + 6 + 1 = 666.

It is not a de Polignac number, because 1625452461 - 2¹ = 1625452459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625452469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159460 + ... + 169346.

It is an arithmetic number, because the mean of its divisors is an integer number (150544800).

Almost surely, 2^1625452461 is an apocalyptic number.

It is an amenable number.

1625452461 is a deficient number, since it is larger than the sum of its proper divisors (783264339).

1625452461 is an equidigital number, since it uses as much as digits as its factorization.

1625452461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15985 (or 15979 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1625452461 is about 40316.9004388978. The cubic root of 1625452461 is about 1175.7764503750.

The spelling of 1625452461 in words is "one billion, six hundred twenty-five million, four hundred fifty-two thousand, four hundred sixty-one".