7825715136 has 84 divisors (see below), whose sum is σ = 23611611400. Its totient is φ = 2471275008.

The previous prime is 7825715129. The next prime is 7825715153. The reversal of 7825715136 is 6315175287.

It is a happy number.

7825715136 is a `hidden beast` number, since 7 + 82 + 57 + 1 + 513 + 6 = 666.

It is a super-2 number, since 2×7825715136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7825715091 and 7825715100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346591 + ... + 368478.

Almost surely, 2^7825715136 is an apocalyptic number.

7825715136 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7825715136 is an abundant number, since it is smaller than the sum of its proper divisors (15785896264).

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

7825715136 is a wasteful number, since it uses less digits than its factorization.

7825715136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715106 (or 715093 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 7825715136 is about 88463.0721600827. The cubic root of 7825715136 is about 1985.3694964905.

The spelling of 7825715136 in words is "seven billion, eight hundred twenty-five million, seven hundred fifteen thousand, one hundred thirty-six".