1672276725 has 48 divisors (see below), whose sum is σ = 3510906240. Its totient is φ = 764467200.

The previous prime is 1672276721. The next prime is 1672276729. The reversal of 1672276725 is 5276722761.

It is an interprime number because it is at equal distance from previous prime (1672276721) and next prime (1672276729).

It is not a de Polignac number, because 1672276725 - 2² = 1672276721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672276721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172236 + ... + 181685.

It is an arithmetic number, because the mean of its divisors is an integer number (73143880).

Almost surely, 2^1672276725 is an apocalyptic number.

1672276725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672276725 is an abundant number, since it is smaller than the sum of its proper divisors (1838629515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1672276725 is a wasteful number, since it uses less digits than its factorization.

1672276725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353947 (or 353936 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 1672276725 is about 40893.4802260703. The cubic root of 1672276725 is about 1186.9599036068.

The spelling of 1672276725 in words is "one billion, six hundred seventy-two million, two hundred seventy-six thousand, seven hundred twenty-five".