70644525 has 72 divisors (see below), whose sum is σ = 139098240. Its totient is φ = 31530240.

The previous prime is 70644521. The next prime is 70644529. The reversal of 70644525 is 52544607.

It is an interprime number because it is at equal distance from previous prime (70644521) and next prime (70644529).

It is not a de Polignac number, because 70644525 - 2² = 70644521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70644521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 172521 + ... + 172929.

It is an arithmetic number, because the mean of its divisors is an integer number (1931920).

Almost surely, 2^70644525 is an apocalyptic number.

70644525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70644525 is a deficient number, since it is larger than the sum of its proper divisors (68453715).

70644525 is a wasteful number, since it uses less digits than its factorization.

70644525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 70644525 is about 8405.0297441473. The cubic root of 70644525 is about 413.3895587030.

It can be divided in two parts, 70644 and 525, that multiplied together give a square (37088100 = 6090²).

The spelling of 70644525 in words is "seventy million, six hundred forty-four thousand, five hundred twenty-five".