672525 has 54 divisors (see below), whose sum is σ = 1424202. Its totient is φ = 302400.

The previous prime is 672521. The next prime is 672557. The reversal of 672525 is 525276.

672525 = 28³ + 29³ + ... + 42³.

It can be written as a sum of positive squares in 3 ways, for example, as 1764 + 670761 = 42^2 + 819^2 .

It is not a de Polignac number, because 672525 - 2² = 672521 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

672525 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672521) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10995 + ... + 11055.

2⁶⁷²⁵²⁵ is an apocalyptic number.

It is an amenable number.

672525 is an abundant number, since it is smaller than the sum of its proper divisors (751677).

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

672525 is a wasteful number, since it uses less digits than its factorization.

672525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 76 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 672525 is about 820.0762159702. The cubic root of 672525 is about 87.6131868558.

The spelling of 672525 in words is "six hundred seventy-two thousand, five hundred twenty-five".