70631825 has 24 divisors (see below), whose sum is σ = 96529536. Its totient is φ = 50840000.

The previous prime is 70631819. The next prime is 70631851. The reversal of 70631825 is 52813607.

It is a happy number.

It is not a de Polignac number, because 70631825 - 2²⁴ = 53854609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70631791 and 70631800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26504 + ... + 29046.

It is an arithmetic number, because the mean of its divisors is an integer number (4022064).

Almost surely, 2^70631825 is an apocalyptic number.

It is an amenable number.

70631825 is a deficient number, since it is larger than the sum of its proper divisors (25897711).

70631825 is a wasteful number, since it uses less digits than its factorization.

70631825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 70631825 is about 8404.2742101861. The cubic root of 70631825 is about 413.3647850821.

It can be divided in two parts, 7063 and 1825, that added together give a palindrome (8888).

The spelling of 70631825 in words is "seventy million, six hundred thirty-one thousand, eight hundred twenty-five".