1625215403 has 16 divisors (see below), whose sum is σ = 1881045504. Its totient is φ = 1375388160.

The previous prime is 1625215391. The next prime is 1625215409. The reversal of 1625215403 is 3045125261.

It is a cyclic number.

It is not a de Polignac number, because 1625215403 - 2⁴ = 1625215387 is a prime.

It is a super-2 number, since 2×1625215403² = 5282650212296904818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625215409) 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, 229451 + ... + 236427.

It is an arithmetic number, because the mean of its divisors is an integer number (117565344).

Almost surely, 2^1625215403 is an apocalyptic number.

1625215403 is a deficient number, since it is larger than the sum of its proper divisors (255830101).

1625215403 is a wasteful number, since it uses less digits than its factorization.

1625215403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1625215403 is about 40313.9603983533. The cubic root of 1625215403 is about 1175.7192886981.

The spelling of 1625215403 in words is "one billion, six hundred twenty-five million, two hundred fifteen thousand, four hundred three".