725211887 has 4 divisors (see below), whose sum is σ = 725347680. Its totient is φ = 725076096.

The previous prime is 725211871. The next prime is 725211913. The reversal of 725211887 is 788112527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788112527 = 5441 ⋅144847.

It is a cyclic number.

It is not a de Polignac number, because 725211887 - 2⁴ = 725211871 is a prime.

It is a super-2 number, since 2×725211887² = 1051864562092201538, 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 (725211847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59543 + ... + 70680.

It is an arithmetic number, because the mean of its divisors is an integer number (181336920).

Almost surely, 2^725211887 is an apocalyptic number.

725211887 is a deficient number, since it is larger than the sum of its proper divisors (135793).

725211887 is a wasteful number, since it uses less digits than its factorization.

725211887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135792.

The product of its digits is 62720, while the sum is 41.

The square root of 725211887 is about 26929.7583910439. The cubic root of 725211887 is about 898.4383977712.

The spelling of 725211887 in words is "seven hundred twenty-five million, two hundred eleven thousand, eight hundred eighty-seven".