1625625247 has 12 divisors (see below), whose sum is σ = 1706741920. Its totient is φ = 1548009792.

The previous prime is 1625625233. The next prime is 1625625251. The reversal of 1625625247 is 7425265261.

It is a de Polignac number, because none of the positive numbers 2^k-1625625247 is a prime.

It is a super-2 number, since 2×1625625247² = 5285314887367622018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625625217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48154 + ... + 74632.

Almost surely, 2^1625625247 is an apocalyptic number.

1625625247 is a deficient number, since it is larger than the sum of its proper divisors (81116673).

1625625247 is an equidigital number, since it uses as much as digits as its factorization.

1625625247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26610 (or 26581 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 1625625247 is about 40319.0432302157. The cubic root of 1625625247 is about 1175.8181106750.

The spelling of 1625625247 in words is "one billion, six hundred twenty-five million, six hundred twenty-five thousand, two hundred forty-seven".