1625315450 has 24 divisors (see below), whose sum is σ = 3297913920. Its totient is φ = 591023600.

The previous prime is 1625315449. The next prime is 1625315453. The reversal of 1625315450 is 545135261.

It is not an unprimeable number, because it can be changed into a prime (1625315453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477010 + ... + 1478109.

It is an arithmetic number, because the mean of its divisors is an integer number (137413080).

Almost surely, 2^1625315450 is an apocalyptic number.

1625315450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625315450 is an abundant number, since it is smaller than the sum of its proper divisors (1672598470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625315450 is a wasteful number, since it uses less digits than its factorization.

1625315450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955142 (or 2955137 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1625315450 is about 40315.2012273286. The cubic root of 1625315450 is about 1175.7434136590.

The spelling of 1625315450 in words is "one billion, six hundred twenty-five million, three hundred fifteen thousand, four hundred fifty".