69991003387825 has 24 divisors (see below), whose sum is σ = 93837279404736. Its totient is φ = 51479745000000.

The previous prime is 69991003387819. The next prime is 69991003387843. The reversal of 69991003387825 is 52878330019996.

It is not a de Polignac number, because 69991003387825 - 2³ = 69991003387817 is a prime.

It is a Duffinian 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, 428916301 + ... + 429079450.

It is an arithmetic number, because the mean of its divisors is an integer number (3909886641864).

Almost surely, 2^{69991003387825} is an apocalyptic number.

69991003387825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69991003387825 is a deficient number, since it is larger than the sum of its proper divisors (23846276016911).

69991003387825 is a wasteful number, since it uses less digits than its factorization.

69991003387825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857996025 (or 857996020 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 70.

The spelling of 69991003387825 in words is "sixty-nine trillion, nine hundred ninety-one billion, three million, three hundred eighty-seven thousand, eight hundred twenty-five".