1625151428 has 12 divisors (see below), whose sum is σ = 2846333952. Its totient is φ = 811913160.

The previous prime is 1625151391. The next prime is 1625151511. The reversal of 1625151428 is 8241515261.

It is a super-2 number, since 2×1625151428² = 5282234327860878368, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 160100 + ... + 169947.

It is an arithmetic number, because the mean of its divisors is an integer number (237194496).

Almost surely, 2^1625151428 is an apocalyptic number.

It is an amenable number.

1625151428 is a deficient number, since it is larger than the sum of its proper divisors (1221182524).

1625151428 is a wasteful number, since it uses less digits than its factorization.

1625151428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331282 (or 331280 counting only the distinct ones).

The product of its digits is 19200, while the sum is 35.

The square root of 1625151428 is about 40313.1669309172. The cubic root of 1625151428 is about 1175.7038614860.

Adding to 1625151428 its reverse (8241515261), we get a palindrome (9866666689).

The spelling of 1625151428 in words is "one billion, six hundred twenty-five million, one hundred fifty-one thousand, four hundred twenty-eight".