615479475625 has 45 divisors (see below), whose sum is σ = 894870628641. Its totient is φ = 421948926000.

The previous prime is 615479475593. The next prime is 615479475643. The reversal of 615479475625 is 526574974516.

The square root of 615479475625 is 784525.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48253590889 + 567225884736 = 219667^2 + 753144^2 .

It is not a de Polignac number, because 615479475625 - 2⁵ = 615479475593 is a prime.

It is a Duffinian number.

Its product of digits (63504000) is a multiple of the sum of its prime factors (9000).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 137289634 + ... + 137294116.

Almost surely, 2^615479475625 is an apocalyptic number.

615479475625 is the 784525-th square number.

615479475625 is the 392263-rd centered octagonal number.

It is an amenable number.

615479475625 is a deficient number, since it is larger than the sum of its proper divisors (279391153016).

615479475625 is an frugal number, since it uses more digits than its factorization.

615479475625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000 (or 4495 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 61.

The spelling of 615479475625 in words is "six hundred fifteen billion, four hundred seventy-nine million, four hundred seventy-five thousand, six hundred twenty-five".