70581525 has 48 divisors (see below), whose sum is σ = 134169984. Its totient is φ = 32071680.

The previous prime is 70581521. The next prime is 70581571. The reversal of 70581525 is 52518507.

It is a happy number.

It is not a de Polignac number, because 70581525 - 2² = 70581521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70581521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122037 + ... + 122613.

It is an arithmetic number, because the mean of its divisors is an integer number (2795208).

Almost surely, 2^70581525 is an apocalyptic number.

70581525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70581525 is a deficient number, since it is larger than the sum of its proper divisors (63588459).

70581525 is a wasteful number, since it uses less digits than its factorization.

70581525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 70581525 is about 8401.2811523005. The cubic root of 70581525 is about 413.2666367553.

The spelling of 70581525 in words is "seventy million, five hundred eighty-one thousand, five hundred twenty-five".