1625465542 has 8 divisors (see below), whose sum is σ = 2566524600. Its totient is φ = 769957344.

The previous prime is 1625465539. The next prime is 1625465549. The reversal of 1625465542 is 2455645261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1625465495 and 1625465504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625465549) 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 3 ways as a sum of consecutive naturals, for example, 21387667 + ... + 21387742.

It is an arithmetic number, because the mean of its divisors is an integer number (320815575).

Almost surely, 2^1625465542 is an apocalyptic number.

1625465542 is a deficient number, since it is larger than the sum of its proper divisors (941059058).

1625465542 is a wasteful number, since it uses less digits than its factorization.

1625465542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42775430.

The product of its digits is 288000, while the sum is 40.

The square root of 1625465542 is about 40317.0626658243. The cubic root of 1625465542 is about 1175.7796044282.

It can be divided in two parts, 16254 and 65542, that added together give a square (81796 = 286²).

The spelling of 1625465542 in words is "one billion, six hundred twenty-five million, four hundred sixty-five thousand, five hundred forty-two".