70811025 has 12 divisors (see below), whose sum is σ = 117074352. Its totient is φ = 37765840.

The previous prime is 70811023. The next prime is 70811047. The reversal of 70811025 is 52011807.

It is not a de Polignac number, because 70811025 - 2¹ = 70811023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70810986 and 70811004.

It is not an unprimeable number, because it can be changed into a prime (70811023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471999 + ... + 472148.

It is an arithmetic number, because the mean of its divisors is an integer number (9756196).

Almost surely, 2^70811025 is an apocalyptic number.

70811025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70811025 is a deficient number, since it is larger than the sum of its proper divisors (46263327).

70811025 is a wasteful number, since it uses less digits than its factorization.

70811025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944160 (or 944155 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 70811025 is about 8414.9286984502. The cubic root of 70811025 is about 413.7140724486.

The spelling of 70811025 in words is "seventy million, eight hundred eleven thousand, twenty-five".