70615725 has 24 divisors (see below), whose sum is σ = 120780960. Its totient is φ = 36361920.

The previous prime is 70615717. The next prime is 70615729. The reversal of 70615725 is 52751607.

It is not a de Polignac number, because 70615725 - 2³ = 70615717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70615729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14059 + ... + 18408.

It is an arithmetic number, because the mean of its divisors is an integer number (5032540).

Almost surely, 2^70615725 is an apocalyptic number.

70615725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70615725 is a deficient number, since it is larger than the sum of its proper divisors (50165235).

70615725 is a wasteful number, since it uses less digits than its factorization.

70615725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32509 (or 32504 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 70615725 is about 8403.3163096482. The cubic root of 70615725 is about 413.3333748844. Note that the first 4 decimals are identical.

The spelling of 70615725 in words is "seventy million, six hundred fifteen thousand, seven hundred twenty-five".