2015625145 has 8 divisors (see below), whose sum is σ = 2561029704. Its totient is φ = 1517647104.

The previous prime is 2015625133. The next prime is 2015625167. The reversal of 2015625145 is 5415265102.

It can be written as a sum of positive squares in 4 ways, for example, as 844890489 + 1170734656 = 29067^2 + 34216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2015625145 - 2⁵ = 2015625113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11856534 + ... + 11856703.

It is an arithmetic number, because the mean of its divisors is an integer number (320128713).

Almost surely, 2^2015625145 is an apocalyptic number.

It is an amenable number.

2015625145 is a deficient number, since it is larger than the sum of its proper divisors (545404559).

2015625145 is a wasteful number, since it uses less digits than its factorization.

2015625145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23713259.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2015625145 is about 44895.7141050234. The cubic root of 2015625145 is about 1263.1936170927.

The spelling of 2015625145 in words is "two billion, fifteen million, six hundred twenty-five thousand, one hundred forty-five".