1671951225 has 48 divisors (see below), whose sum is σ = 3170872448. Its totient is φ = 761495040.

The previous prime is 1671951217. The next prime is 1671951233. The reversal of 1671951225 is 5221591761.

It is an interprime number because it is at equal distance from previous prime (1671951217) and next prime (1671951233).

It is not a de Polignac number, because 1671951225 - 2³ = 1671951217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139677 + ... + 151173.

Almost surely, 2^1671951225 is an apocalyptic number.

1671951225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1671951225 is a deficient number, since it is larger than the sum of its proper divisors (1498921223).

1671951225 is a wasteful number, since it uses less digits than its factorization.

1671951225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11794 (or 11789 counting only the distinct ones).

The product of its digits is 37800, while the sum is 39.

The square root of 1671951225 is about 40889.5001803642. The cubic root of 1671951225 is about 1186.8828867445.

The spelling of 1671951225 in words is "one billion, six hundred seventy-one million, nine hundred fifty-one thousand, two hundred twenty-five".