70955640625 has 21 divisors (see below), whose sum is σ = 88735055583. Its totient is φ = 56737875000.

The previous prime is 70955640593. The next prime is 70955640667. The reversal of 70955640625 is 52604655907.

The square root of 70955640625 is 266375.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 62163952929 + 8791687696 = 249327^2 + 93764^2 .

It is not a de Polignac number, because 70955640625 - 2⁵ = 70955640593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 33295810 + ... + 33297940.

Almost surely, 2^70955640625 is an apocalyptic number.

70955640625 is the 266375-th square number.

70955640625 is the 133188-th centered octagonal number.

It is an amenable number.

70955640625 is a deficient number, since it is larger than the sum of its proper divisors (17779414958).

70955640625 is an frugal number, since it uses more digits than its factorization.

70955640625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 49.

Multiplying 70955640625 by its sum of digits (49), we get a square (3476826390625 = 1864625²).

The spelling of 70955640625 in words is "seventy billion, nine hundred fifty-five million, six hundred forty thousand, six hundred twenty-five".