7725295997 has 4 divisors (see below), whose sum is σ = 7725916380. Its totient is φ = 7724675616.

The previous prime is 7725295961. The next prime is 7725296011. The reversal of 7725295997 is 7995925277.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4750793476 + 2974502521 = 68926^2 + 54539^2 .

It is a cyclic number.

It is not a de Polignac number, because 7725295997 - 2²² = 7721101693 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 (7725295927) 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, 291122 + ... + 316547.

It is an arithmetic number, because the mean of its divisors is an integer number (1931479095).

Almost surely, 2^7725295997 is an apocalyptic number.

It is an amenable number.

7725295997 is a deficient number, since it is larger than the sum of its proper divisors (620383).

7725295997 is a wasteful number, since it uses less digits than its factorization.

7725295997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620382.

The product of its digits is 25004700, while the sum is 62.

The square root of 7725295997 is about 87893.6630082055. The cubic root of 7725295997 is about 1976.8408620227.

The spelling of 7725295997 in words is "seven billion, seven hundred twenty-five million, two hundred ninety-five thousand, nine hundred ninety-seven".