720493725 has 24 divisors (see below), whose sum is σ = 1361391040. Its totient is φ = 329368320.

The previous prime is 720493703. The next prime is 720493751. The reversal of 720493725 is 527394027.

It is not a de Polignac number, because 720493725 - 2⁵ = 720493693 is a prime.

It is a super-2 number, since 2×720493725² = 1038222415528751250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 685660 + ... + 686709.

Almost surely, 2^720493725 is an apocalyptic number.

720493725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

720493725 is a deficient number, since it is larger than the sum of its proper divisors (640897315).

720493725 is a wasteful number, since it uses less digits than its factorization.

720493725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372389 (or 1372384 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 720493725 is about 26842.0141755420. The cubic root of 720493725 is about 896.4857711639.

The spelling of 720493725 in words is "seven hundred twenty million, four hundred ninety-three thousand, seven hundred twenty-five".