725494117687 has 4 divisors (see below), whose sum is σ = 725551786960. Its totient is φ = 725436448416.

The previous prime is 725494117681. The next prime is 725494117693. The reversal of 725494117687 is 786711494527.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (725494117681) and next prime (725494117693).

It is a cyclic number.

It is not a de Polignac number, because 725494117687 - 2¹¹ = 725494115639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725494117681) 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, 28815762 + ... + 28840927.

It is an arithmetic number, because the mean of its divisors is an integer number (181387946740).

Almost surely, 2^725494117687 is an apocalyptic number.

725494117687 is a deficient number, since it is larger than the sum of its proper divisors (57669273).

725494117687 is a wasteful number, since it uses less digits than its factorization.

725494117687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57669272.

The product of its digits is 23708160, while the sum is 61.

The spelling of 725494117687 in words is "seven hundred twenty-five billion, four hundred ninety-four million, one hundred seventeen thousand, six hundred eighty-seven".