70625720025 has 81 divisors (see below), whose sum is σ = 147209492703. Its totient is φ = 32273287200.

The previous prime is 70625720003. The next prime is 70625720027. The reversal of 70625720025 is 52002752607.

The square root of 70625720025 is 265755.

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

70625720025 is a `hidden beast` number, since 7 + 0 + 62 + 572 + 0 + 0 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25425259209 + 45200460816 = 159453^2 + 212604^2 .

It is not a de Polignac number, because 70625720025 - 2¹³ = 70625711833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70625720027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 27903010 + ... + 27905540.

Almost surely, 2^70625720025 is an apocalyptic number.

70625720025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

70625720025 is the 265755-th square number.

70625720025 is the 132878-th centered octagonal number.

It is an amenable number.

70625720025 is an abundant number, since it is smaller than the sum of its proper divisors (76583772678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70625720025 is an equidigital number, since it uses as much as digits as its factorization.

70625720025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

Multiplying 70625720025 by its sum of digits (36), we get a square (2542525920900 = 1594530²).

The spelling of 70625720025 in words is "seventy billion, six hundred twenty-five million, seven hundred twenty thousand, twenty-five".